Java 编写一个方法，从两个不同的数组中提取信息并将其打印到JTextField中
这个项目的目标是创建四个类：一个学生类、一个研究生类、一个经理类和一个GUI类。在GUI中有两个单选按钮：一个用于学生，一个用于研究生。根据选择哪一个，Manager类应该负责使用两个数组创建和存储Student或Gradstuent对象。我还为我的GUI添加了一个按钮，用来打印所有主修“计算机科学”的学生。然而，在如何编写此方法方面，我遇到了麻烦。在此问题上的任何帮助都将不胜感激。我将在下面发布我的课程。谢谢大家! 学生班Java 编写一个方法，从两个不同的数组中提取信息并将其打印到JTextField中,java,arrays,string,methods,jtextarea,Java,Arrays,String,Methods,Jtextarea,这个项目的目标是创建四个类：一个学生类、一个研究生类、一个经理类和一个GUI类。在GUI中有两个单选按钮：一个用于学生，一个用于研究生。根据选择哪一个，Manager类应该负责使用两个数组创建和存储Student或Gradstuent对象。我还为我的GUI添加了一个按钮，用来打印所有主修“计算机科学”的学生。然而，在如何编写此方法方面，我遇到了麻烦。在此问题上的任何帮助都将不胜感激。我将在下面发布我的课程。谢谢大家! 学生班 public class Student { protecte
public class Student {
protected String name;
protected String address;
protected double balance;
protected String major;
// Constructs fields
public Student(String name, String address, String balance, String major) {
this.name = name;
this.address = address;
this.major = major;
try {
this.balance = Double.parseDouble(balance);
}
catch(NumberFormatException e) {
this.balance = 0;
}
}
public String setName(String name) {
return name;
}
public String setAddress(String address) {
return address;
}
public double setBalance(double balance) {
return balance;
}
public String setMajor(String major) {
return major;
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class GradStudent extends Student {
public GradStudent(String name, String address, String balance, String major) {
super(name, address, balance, major);
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class Manager {
public Student[] students = new Student[50];
public int counter1 = 0;
public GradStudent[] gradStudents = new GradStudent[50];
public int counter2 = 0;
public Manager() {
}
public void addStudent(String name, String address, String balance, String major) {
Student student1 = new Student(name, address, balance, major);
students[counter1] = student1;
counter1++;
}
public String getLastStudent() {
return "Student added: " + students[counter1-1] +"\n";
}
public void addGradStudent(String name, String address, String balance, String major) {
GradStudent student2 = new GradStudent(name, address, balance, major);
gradStudents[counter2] = student2;
counter2++;
}
public String getLastGradStudent() {
return "Graduate Student added: " + gradStudents[counter2-1] +"\n";
}
public String getAverageBalance(){
double sum = 0;
for (int i = 0; i < counter1; i++) {
sum += students[i].setBalance(counter1);
}
for(int i = 0; i < counter2; i++) {
sum+= students[i].setBalance(counter2);
}
double average = sum / (counter1+counter2);
return average+"";
}
}
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
public class GUI extends JFrame {
private JRadioButton jrbStudent = new JRadioButton("Student");
private JRadioButton jrbGraduate = new JRadioButton("Graduate");
private JTextField name = new JTextField(20);
private JTextField address = new JTextField(20);
private JTextField balance = new JTextField(20);
private JTextField major = new JTextField(20);
private JButton jbtSubmit = new JButton("Submit");
private JTextArea echoStudent = new JTextArea();
private JButton printStudentNames = new JButton("Print Student's Names");
private JButton printGradStudentNames = new JButton(
"Print Graduate Student's Names");
private JButton calcBalance = new JButton(
"Calculate Average Balance of All Students");
private JButton compSciMajor = new JButton(
"Displays Computer Science Major Students");
private Manager m1 = new Manager();
public GUI() {
// Creates panel P1 and adds the components
JPanel p1 = new JPanel(new GridLayout(9, 1, 10, 10));
p1.add(new JLabel("Name: "));
p1.add(name);
p1.add(new JLabel("Address: "));
p1.add(address);
p1.add(new JLabel("Balance: "));
p1.add(balance);
p1.add(new JLabel("Major: "));
p1.add(major);
p1.add(jrbStudent);
p1.add(jrbGraduate);
p1.add(new JLabel("Submit Button: "));
p1.add(jbtSubmit);
p1.add(printStudentNames);
p1.add(printGradStudentNames);
p1.add(calcBalance);
p1.add(compSciMajor);
p1.add(new JLabel("Submitted Text: "));
// Creates a radio-button group to group both buttons
ButtonGroup group = new ButtonGroup();
group.add(jrbStudent);
group.add(jrbGraduate);
// Adds the panel and text area to the frame
add(p1);
p1.add(echoStudent);
echoStudent.setEditable(false);
// Creates a listener and registers it with the submit button
SubmitListener l1 = new SubmitListener();
jbtSubmit.addActionListener(l1);
// Creates a listener and registers it with the radio buttons
JRBListener l2 = new JRBListener();
jrbStudent.addActionListener(l2);
jrbGraduate.addActionListener(l2);
// Creates a listener and registers it with the PrintStudentNames button
StudentListener l3 = new StudentListener();
printStudentNames.addActionListener(l3);
// Creates a listener and registers it with the PrintGradStudentNames button
GradStudentListener l4 = new GradStudentListener();
printGradStudentNames.addActionListener(l4);
// Creates a listener and registers it with the calcBalance button
CalcBalanceListener l5 = new CalcBalanceListener();
calcBalance.addActionListener(l5);
}
// Class to handle the submit button
class SubmitListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
Student[] students = new Student[50];
int arrayLocation = 0;
Student student1 = new Student(name.getText(), address.getText(),
balance.getText(), major.getText());
// Checks remaining array space
if (arrayLocation < 50) {
students[arrayLocation] = student1;
++arrayLocation;
}
// Echos back entered text while storing the previous text
echoStudent.setText(echoStudent.getText() + "\n"
+ student1.toString());
}
}
// Class to handle the radio buttons
class JRBListener implements ActionListener {
public void actionPerformed(ActionEvent b) {
if (b.getSource() == jrbStudent) {
m1.addStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent
.setText("Created Student: \n" + m1.getLastStudent());
}
if (jrbGraduate.isSelected()) {
m1.addGradStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent.setText("Created Graduate Student: \n"
+ m1.getLastGradStudent());
}
}
}
// Class to handle the "Print Student's Names" button
class StudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent c) {
echoStudent.setText(m1.students[counter1].name);
}
}
// Class to handle the "Print Graduate Student's Names" button
class GradStudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent d) {
echoStudent.setText(m1.gradStudents[counter2].name);
}
}
// Class to handle the "Calculate Average Balance of All Students" button
class CalcBalanceListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent e) {
echoStudent.setText(getAverageBalance());
}
}
// Class to handle the "Displays Computer Science Major Students" button
class CompSciMajorListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent f) {
}
}
public static void main(String[] args) {
GUI frame = new GUI();
frame.setTitle("Information Interface");
frame.setSize(1200, 900);
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
public class Student {
protected String name;
protected String address;
protected double balance;
protected String major;
// Constructs fields
public Student(String name, String address, String balance, String major) {
this.name = name;
this.address = address;
this.major = major;
try {
this.balance = Double.parseDouble(balance);
}
catch(NumberFormatException e) {
this.balance = 0;
}
}
public String setName(String name) {
return name;
}
public String setAddress(String address) {
return address;
}
public double setBalance(double balance) {
return balance;
}
public String setMajor(String major) {
return major;
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class GradStudent extends Student {
public GradStudent(String name, String address, String balance, String major) {
super(name, address, balance, major);
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class Manager {
public Student[] students = new Student[50];
public int counter1 = 0;
public GradStudent[] gradStudents = new GradStudent[50];
public int counter2 = 0;
public Manager() {
}
public void addStudent(String name, String address, String balance, String major) {
Student student1 = new Student(name, address, balance, major);
students[counter1] = student1;
counter1++;
}
public String getLastStudent() {
return "Student added: " + students[counter1-1] +"\n";
}
public void addGradStudent(String name, String address, String balance, String major) {
GradStudent student2 = new GradStudent(name, address, balance, major);
gradStudents[counter2] = student2;
counter2++;
}
public String getLastGradStudent() {
return "Graduate Student added: " + gradStudents[counter2-1] +"\n";
}
public String getAverageBalance(){
double sum = 0;
for (int i = 0; i < counter1; i++) {
sum += students[i].setBalance(counter1);
}
for(int i = 0; i < counter2; i++) {
sum+= students[i].setBalance(counter2);
}
double average = sum / (counter1+counter2);
return average+"";
}
}
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
public class GUI extends JFrame {
private JRadioButton jrbStudent = new JRadioButton("Student");
private JRadioButton jrbGraduate = new JRadioButton("Graduate");
private JTextField name = new JTextField(20);
private JTextField address = new JTextField(20);
private JTextField balance = new JTextField(20);
private JTextField major = new JTextField(20);
private JButton jbtSubmit = new JButton("Submit");
private JTextArea echoStudent = new JTextArea();
private JButton printStudentNames = new JButton("Print Student's Names");
private JButton printGradStudentNames = new JButton(
"Print Graduate Student's Names");
private JButton calcBalance = new JButton(
"Calculate Average Balance of All Students");
private JButton compSciMajor = new JButton(
"Displays Computer Science Major Students");
private Manager m1 = new Manager();
public GUI() {
// Creates panel P1 and adds the components
JPanel p1 = new JPanel(new GridLayout(9, 1, 10, 10));
p1.add(new JLabel("Name: "));
p1.add(name);
p1.add(new JLabel("Address: "));
p1.add(address);
p1.add(new JLabel("Balance: "));
p1.add(balance);
p1.add(new JLabel("Major: "));
p1.add(major);
p1.add(jrbStudent);
p1.add(jrbGraduate);
p1.add(new JLabel("Submit Button: "));
p1.add(jbtSubmit);
p1.add(printStudentNames);
p1.add(printGradStudentNames);
p1.add(calcBalance);
p1.add(compSciMajor);
p1.add(new JLabel("Submitted Text: "));
// Creates a radio-button group to group both buttons
ButtonGroup group = new ButtonGroup();
group.add(jrbStudent);
group.add(jrbGraduate);
// Adds the panel and text area to the frame
add(p1);
p1.add(echoStudent);
echoStudent.setEditable(false);
// Creates a listener and registers it with the submit button
SubmitListener l1 = new SubmitListener();
jbtSubmit.addActionListener(l1);
// Creates a listener and registers it with the radio buttons
JRBListener l2 = new JRBListener();
jrbStudent.addActionListener(l2);
jrbGraduate.addActionListener(l2);
// Creates a listener and registers it with the PrintStudentNames button
StudentListener l3 = new StudentListener();
printStudentNames.addActionListener(l3);
// Creates a listener and registers it with the PrintGradStudentNames button
GradStudentListener l4 = new GradStudentListener();
printGradStudentNames.addActionListener(l4);
// Creates a listener and registers it with the calcBalance button
CalcBalanceListener l5 = new CalcBalanceListener();
calcBalance.addActionListener(l5);
}
// Class to handle the submit button
class SubmitListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
Student[] students = new Student[50];
int arrayLocation = 0;
Student student1 = new Student(name.getText(), address.getText(),
balance.getText(), major.getText());
// Checks remaining array space
if (arrayLocation < 50) {
students[arrayLocation] = student1;
++arrayLocation;
}
// Echos back entered text while storing the previous text
echoStudent.setText(echoStudent.getText() + "\n"
+ student1.toString());
}
}
// Class to handle the radio buttons
class JRBListener implements ActionListener {
public void actionPerformed(ActionEvent b) {
if (b.getSource() == jrbStudent) {
m1.addStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent
.setText("Created Student: \n" + m1.getLastStudent());
}
if (jrbGraduate.isSelected()) {
m1.addGradStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent.setText("Created Graduate Student: \n"
+ m1.getLastGradStudent());
}
}
}
// Class to handle the "Print Student's Names" button
class StudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent c) {
echoStudent.setText(m1.students[counter1].name);
}
}
// Class to handle the "Print Graduate Student's Names" button
class GradStudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent d) {
echoStudent.setText(m1.gradStudents[counter2].name);
}
}
// Class to handle the "Calculate Average Balance of All Students" button
class CalcBalanceListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent e) {
echoStudent.setText(getAverageBalance());
}
}
// Class to handle the "Displays Computer Science Major Students" button
class CompSciMajorListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent f) {
}
}
public static void main(String[] args) {
GUI frame = new GUI();
frame.setTitle("Information Interface");
frame.setSize(1200, 900);
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
public class Student {
protected String name;
protected String address;
protected double balance;
protected String major;
// Constructs fields
public Student(String name, String address, String balance, String major) {
this.name = name;
this.address = address;
this.major = major;
try {
this.balance = Double.parseDouble(balance);
}
catch(NumberFormatException e) {
this.balance = 0;
}
}
public String setName(String name) {
return name;
}
public String setAddress(String address) {
return address;
}
public double setBalance(double balance) {
return balance;
}
public String setMajor(String major) {
return major;
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class GradStudent extends Student {
public GradStudent(String name, String address, String balance, String major) {
super(name, address, balance, major);
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class Manager {
public Student[] students = new Student[50];
public int counter1 = 0;
public GradStudent[] gradStudents = new GradStudent[50];
public int counter2 = 0;
public Manager() {
}
public void addStudent(String name, String address, String balance, String major) {
Student student1 = new Student(name, address, balance, major);
students[counter1] = student1;
counter1++;
}
public String getLastStudent() {
return "Student added: " + students[counter1-1] +"\n";
}
public void addGradStudent(String name, String address, String balance, String major) {
GradStudent student2 = new GradStudent(name, address, balance, major);
gradStudents[counter2] = student2;
counter2++;
}
public String getLastGradStudent() {
return "Graduate Student added: " + gradStudents[counter2-1] +"\n";
}
public String getAverageBalance(){
double sum = 0;
for (int i = 0; i < counter1; i++) {
sum += students[i].setBalance(counter1);
}
for(int i = 0; i < counter2; i++) {
sum+= students[i].setBalance(counter2);
}
double average = sum / (counter1+counter2);
return average+"";
}
}
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
public class GUI extends JFrame {
private JRadioButton jrbStudent = new JRadioButton("Student");
private JRadioButton jrbGraduate = new JRadioButton("Graduate");
private JTextField name = new JTextField(20);
private JTextField address = new JTextField(20);
private JTextField balance = new JTextField(20);
private JTextField major = new JTextField(20);
private JButton jbtSubmit = new JButton("Submit");
private JTextArea echoStudent = new JTextArea();
private JButton printStudentNames = new JButton("Print Student's Names");
private JButton printGradStudentNames = new JButton(
"Print Graduate Student's Names");
private JButton calcBalance = new JButton(
"Calculate Average Balance of All Students");
private JButton compSciMajor = new JButton(
"Displays Computer Science Major Students");
private Manager m1 = new Manager();
public GUI() {
// Creates panel P1 and adds the components
JPanel p1 = new JPanel(new GridLayout(9, 1, 10, 10));
p1.add(new JLabel("Name: "));
p1.add(name);
p1.add(new JLabel("Address: "));
p1.add(address);
p1.add(new JLabel("Balance: "));
p1.add(balance);
p1.add(new JLabel("Major: "));
p1.add(major);
p1.add(jrbStudent);
p1.add(jrbGraduate);
p1.add(new JLabel("Submit Button: "));
p1.add(jbtSubmit);
p1.add(printStudentNames);
p1.add(printGradStudentNames);
p1.add(calcBalance);
p1.add(compSciMajor);
p1.add(new JLabel("Submitted Text: "));
// Creates a radio-button group to group both buttons
ButtonGroup group = new ButtonGroup();
group.add(jrbStudent);
group.add(jrbGraduate);
// Adds the panel and text area to the frame
add(p1);
p1.add(echoStudent);
echoStudent.setEditable(false);
// Creates a listener and registers it with the submit button
SubmitListener l1 = new SubmitListener();
jbtSubmit.addActionListener(l1);
// Creates a listener and registers it with the radio buttons
JRBListener l2 = new JRBListener();
jrbStudent.addActionListener(l2);
jrbGraduate.addActionListener(l2);
// Creates a listener and registers it with the PrintStudentNames button
StudentListener l3 = new StudentListener();
printStudentNames.addActionListener(l3);
// Creates a listener and registers it with the PrintGradStudentNames button
GradStudentListener l4 = new GradStudentListener();
printGradStudentNames.addActionListener(l4);
// Creates a listener and registers it with the calcBalance button
CalcBalanceListener l5 = new CalcBalanceListener();
calcBalance.addActionListener(l5);
}
// Class to handle the submit button
class SubmitListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
Student[] students = new Student[50];
int arrayLocation = 0;
Student student1 = new Student(name.getText(), address.getText(),
balance.getText(), major.getText());
// Checks remaining array space
if (arrayLocation < 50) {
students[arrayLocation] = student1;
++arrayLocation;
}
// Echos back entered text while storing the previous text
echoStudent.setText(echoStudent.getText() + "\n"
+ student1.toString());
}
}
// Class to handle the radio buttons
class JRBListener implements ActionListener {
public void actionPerformed(ActionEvent b) {
if (b.getSource() == jrbStudent) {
m1.addStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent
.setText("Created Student: \n" + m1.getLastStudent());
}
if (jrbGraduate.isSelected()) {
m1.addGradStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent.setText("Created Graduate Student: \n"
+ m1.getLastGradStudent());
}
}
}
// Class to handle the "Print Student's Names" button
class StudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent c) {
echoStudent.setText(m1.students[counter1].name);
}
}
// Class to handle the "Print Graduate Student's Names" button
class GradStudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent d) {
echoStudent.setText(m1.gradStudents[counter2].name);
}
}
// Class to handle the "Calculate Average Balance of All Students" button
class CalcBalanceListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent e) {
echoStudent.setText(getAverageBalance());
}
}
// Class to handle the "Displays Computer Science Major Students" button
class CompSciMajorListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent f) {
}
}
public static void main(String[] args) {
GUI frame = new GUI();
frame.setTitle("Information Interface");
frame.setSize(1200, 900);
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
公共类管理器{
公立学生[]学生=新生[50]；
公共int计数器1=0；
公立研究生[]研究生=新研究生[50]；
公共int计数器2=0；
公共经理（）{
}
public void addStudent（字符串名称、字符串地址、字符串余额、字符串专业）{
学生1=新学生（姓名、地址、余额、专业）；
学生[1]=学生1；
计数器1++；
}
公共字符串getLastStudent（）{
return“学生添加：“+学生[counter1-1]+”\n”；
}
public void addGradStudent（字符串名称、字符串地址、字符串余额、字符串专业）{
研究生2=新研究生（姓名、地址、余额、专业）；
研究生[2]=学生2；
计数器2++；
}
公共字符串getLastGradStudent（）{
return“研究生添加：“+研究生[counter2-1]+”\n”；
}
公共字符串getAverageBalance（）{
双和=0；
对于（int i=0；ipublic class Student {
protected String name;
protected String address;
protected double balance;
protected String major;
// Constructs fields
public Student(String name, String address, String balance, String major) {
this.name = name;
this.address = address;
this.major = major;
try {
this.balance = Double.parseDouble(balance);
}
catch(NumberFormatException e) {
this.balance = 0;
}
}
public String setName(String name) {
return name;
}
public String setAddress(String address) {
return address;
}
public double setBalance(double balance) {
return balance;
}
public String setMajor(String major) {
return major;
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class GradStudent extends Student {
public GradStudent(String name, String address, String balance, String major) {
super(name, address, balance, major);
}
public String toString() {
return ("Name: " + this.name + " Address: " + this.address
+ " Balance: " + this.balance + " Major: " + this.major);
}
}
public class Manager {
public Student[] students = new Student[50];
public int counter1 = 0;
public GradStudent[] gradStudents = new GradStudent[50];
public int counter2 = 0;
public Manager() {
}
public void addStudent(String name, String address, String balance, String major) {
Student student1 = new Student(name, address, balance, major);
students[counter1] = student1;
counter1++;
}
public String getLastStudent() {
return "Student added: " + students[counter1-1] +"\n";
}
public void addGradStudent(String name, String address, String balance, String major) {
GradStudent student2 = new GradStudent(name, address, balance, major);
gradStudents[counter2] = student2;
counter2++;
}
public String getLastGradStudent() {
return "Graduate Student added: " + gradStudents[counter2-1] +"\n";
}
public String getAverageBalance(){
double sum = 0;
for (int i = 0; i < counter1; i++) {
sum += students[i].setBalance(counter1);
}
for(int i = 0; i < counter2; i++) {
sum+= students[i].setBalance(counter2);
}
double average = sum / (counter1+counter2);
return average+"";
}
}
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
public class GUI extends JFrame {
private JRadioButton jrbStudent = new JRadioButton("Student");
private JRadioButton jrbGraduate = new JRadioButton("Graduate");
private JTextField name = new JTextField(20);
private JTextField address = new JTextField(20);
private JTextField balance = new JTextField(20);
private JTextField major = new JTextField(20);
private JButton jbtSubmit = new JButton("Submit");
private JTextArea echoStudent = new JTextArea();
private JButton printStudentNames = new JButton("Print Student's Names");
private JButton printGradStudentNames = new JButton(
"Print Graduate Student's Names");
private JButton calcBalance = new JButton(
"Calculate Average Balance of All Students");
private JButton compSciMajor = new JButton(
"Displays Computer Science Major Students");
private Manager m1 = new Manager();
public GUI() {
// Creates panel P1 and adds the components
JPanel p1 = new JPanel(new GridLayout(9, 1, 10, 10));
p1.add(new JLabel("Name: "));
p1.add(name);
p1.add(new JLabel("Address: "));
p1.add(address);
p1.add(new JLabel("Balance: "));
p1.add(balance);
p1.add(new JLabel("Major: "));
p1.add(major);
p1.add(jrbStudent);
p1.add(jrbGraduate);
p1.add(new JLabel("Submit Button: "));
p1.add(jbtSubmit);
p1.add(printStudentNames);
p1.add(printGradStudentNames);
p1.add(calcBalance);
p1.add(compSciMajor);
p1.add(new JLabel("Submitted Text: "));
// Creates a radio-button group to group both buttons
ButtonGroup group = new ButtonGroup();
group.add(jrbStudent);
group.add(jrbGraduate);
// Adds the panel and text area to the frame
add(p1);
p1.add(echoStudent);
echoStudent.setEditable(false);
// Creates a listener and registers it with the submit button
SubmitListener l1 = new SubmitListener();
jbtSubmit.addActionListener(l1);
// Creates a listener and registers it with the radio buttons
JRBListener l2 = new JRBListener();
jrbStudent.addActionListener(l2);
jrbGraduate.addActionListener(l2);
// Creates a listener and registers it with the PrintStudentNames button
StudentListener l3 = new StudentListener();
printStudentNames.addActionListener(l3);
// Creates a listener and registers it with the PrintGradStudentNames button
GradStudentListener l4 = new GradStudentListener();
printGradStudentNames.addActionListener(l4);
// Creates a listener and registers it with the calcBalance button
CalcBalanceListener l5 = new CalcBalanceListener();
calcBalance.addActionListener(l5);
}
// Class to handle the submit button
class SubmitListener implements ActionListener {
public void actionPerformed(ActionEvent a) {
Student[] students = new Student[50];
int arrayLocation = 0;
Student student1 = new Student(name.getText(), address.getText(),
balance.getText(), major.getText());
// Checks remaining array space
if (arrayLocation < 50) {
students[arrayLocation] = student1;
++arrayLocation;
}
// Echos back entered text while storing the previous text
echoStudent.setText(echoStudent.getText() + "\n"
+ student1.toString());
}
}
// Class to handle the radio buttons
class JRBListener implements ActionListener {
public void actionPerformed(ActionEvent b) {
if (b.getSource() == jrbStudent) {
m1.addStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent
.setText("Created Student: \n" + m1.getLastStudent());
}
if (jrbGraduate.isSelected()) {
m1.addGradStudent(name.getText(), address.getText(),
balance.getText(), major.getText());
echoStudent.setText("Created Graduate Student: \n"
+ m1.getLastGradStudent());
}
}
}
// Class to handle the "Print Student's Names" button
class StudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent c) {
echoStudent.setText(m1.students[counter1].name);
}
}
// Class to handle the "Print Graduate Student's Names" button
class GradStudentListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent d) {
echoStudent.setText(m1.gradStudents[counter2].name);
}
}
// Class to handle the "Calculate Average Balance of All Students" button
class CalcBalanceListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent e) {
echoStudent.setText(getAverageBalance());
}
}
// Class to handle the "Displays Computer Science Major Students" button
class CompSciMajorListener extends Manager implements ActionListener {
public void actionPerformed(ActionEvent f) {
}
}
public static void main(String[] args) {
GUI frame = new GUI();
frame.setTitle("Information Interface");
frame.setSize(1200, 900);
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
导入java.awt.GridLayout；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入javax.swing.JButton；
导入javax.swing.JFrame；
导入javax.swing.JLabel；
导入javax.swing.JPanel；
导入javax.swing.JTextArea；
导入javax.swing.JTextField；
导入javax.swing.JRadioButton；
导入javax.swing.ButtonGroup；
公共类GUI扩展JFrame{
私人JRadioButton jrbStudent=新JRadioButton（“学生”）；
私人JRadioButton jrbGraduate=新JRadioButton（“毕业生”）；
私有JTextField name=新JTextField（20）；
私有JTextField地址=新JTextField（20）；
私人JTextField余额=新JTextField（20）；
专用JTextField major=新JTextField（20）；
私有JButton jbtSubmit=新JButton（“提交”）；
私有JTextArea echoStudent=新JTextArea（）；
私有JButton printStudentNames=新JButton（“打印学生姓名”）；
私有JButton printGradStudentNames=新JButton(
“打印研究生姓名”）；
私有JButton calcBalance=新JButton(
“计算所有学生的平均余额”）；
私有JButton compSciMajor=新JButton(
“显示计算机科学专业学生”）；
私人经理m1=新经理（）；
公共图形用户界面（）{
//创建面板P1并添加零部件
JPanel p1=新的JPanel（新的网格布局（9,1,10,10））；
p1.添加（新的JLabel（“名称”）；
p1.添加（名称）；
p1.添加（新的JLabel（“地址”）；
p1.添加（地址）；
p1.增加（新的JLabel（“余额：”）；
p1.增加（余额）；
p1.增加（新的JLabel（“少校”）；
p1.增加（主要）；
p1.添加（jrbStudent）；
p1.添加（JRBGRADUDE）；
p1.添加（新JLabel（“提交按钮”）；
p1.添加（jbtSubmit）；
p1.添加（打印学生姓名）；
p1.添加（打印学生姓名）；
p1.添加（calcBalance）；
p1.增加（专业）；
p1.添加（新JLabel（“提交文本：”）；
//创建单选按钮组以对两个按钮进行分组
ButtonGroup=新建ButtonGroup（）；
添加组（jrbStudent）；
添加组（JRBGRADUDE）；
//将面板和文本区域添加到框架中
添加（p1）；
p1.增加（学生）；
echoStudent.setEditable（false）；
//创建一个侦听器并使用submit按钮注册它
SubmitListener l1=新的SubmitListener（）；
jbtSubmit.addActionListener（l1）；
//创建侦听器并使用单选按钮注册它
JRBListener l2=新的JRBListener（）；
jrbStudent.addActionListener（l2）；
jrbGraduate.addActionListener（l2）；
//创建侦听器并使用PrintStudentNames按钮注册它
StudentListener l3=新建StudentListener（）；
printStudentNames.addActionListener（l3）；
//创建侦听器并使用PrintGradStudentNames按钮注册它
GradStudentListener l4=新的GradStudentListener（）；
printGradStudentNames.addActionListener（l4）；
//创建侦听器并使用calcBalance按钮注册它
CalcBalanceListener l5=新的CalcBalanceListener（）；
calcBalance.addActionListener（l5）；
}
//类来处理提交按钮
类SubmitListener实现ActionListener{
已执行的公共无效操作（操作事件a）{
学生[]学生=新生[50]；
int-arrayLocation=0；
Student student1=新学生（名称.getText（），地址.getText（），
balance.getText（），major.getText（））；
//检查剩余的数组空间
如果（阵列位置<50）{
学生[排列位置]=学生1；
++排列定位；
}