如何向表单添加多个单选按钮,以及如何在java中连接两个表单?
我对JAVA完全陌生。我想创建一个表单,表单上有两个单选按钮,一个给学生,另一个给老师。当用户点击学生时,另一个与学生相关的表单应打开,当用户点击教师时,教师表单应打开,然后要求用户输入相关数据……这是我的代码,用于如何向表单添加多个单选按钮,以及如何在java中连接两个表单?,java,swing,layout-manager,jradiobutton,buttongroup,Java,Swing,Layout Manager,Jradiobutton,Buttongroup,我对JAVA完全陌生。我想创建一个表单,表单上有两个单选按钮,一个给学生,另一个给老师。当用户点击学生时,另一个与学生相关的表单应打开,当用户点击教师时,教师表单应打开,然后要求用户输入相关数据……这是我的代码,用于 import java.awt.*; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.border.EmptyBor
import java.awt.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.EmptyBorder;
public class Frm1 extends JFrame {
private JPanel contentPane;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Frm1 frame = new Frm1();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Frm1() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JRadioButton rb1=new JRadioButton("STUDENT");
add(rb1);
JRadioButton rb2=new JRadioButton("TEACHER");
add(rb2);
}
}
它只将教师单选按钮添加到表单中,而不是学生,任何一个帮助都可以,另外,当选择相应的单选按钮时,我将如何使程序转到教师或学生表单
这是因为您使用的是BorderLayout,而不是指定按钮的放置位置。要测试它,请注释contentPane.setLayout(新的BorderLayout(0,0));你会看到他们两个并排出现
要了解更多关于布局的信息,您应该尝试从这个链接学习它们,因为您使用的是BorderLayout,而不是指定按钮的放置位置。要测试它,请注释contentPane.setLayout(新的BorderLayout(0,0));你会看到他们两个并排出现 要了解更多关于版面的信息,您应该尝试从该链接学习它们了解更多关于版面的信息
请参阅以下代码
/**
* Create the frame.
*/
public Frm1() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
//contentPane.setLayout(new BorderLayout(0, 0)); //this is your problem
setContentPane(contentPane);
JRadioButton rb1=new JRadioButton("STUDENT");
contentPane.add(rb1);
JRadioButton rb2=new JRadioButton("TEACHER");
contentPane.add(rb2);
//Group the radio buttons.
ButtonGroup group = new ButtonGroup();
group.add(rb1);
group.add(rb2);
}
有关布局的详细信息请参阅以下代码
/**
* Create the frame.
*/
public Frm1() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
//contentPane.setLayout(new BorderLayout(0, 0)); //this is your problem
setContentPane(contentPane);
JRadioButton rb1=new JRadioButton("STUDENT");
contentPane.add(rb1);
JRadioButton rb2=new JRadioButton("TEACHER");
contentPane.add(rb2);
//Group the radio buttons.
ButtonGroup group = new ButtonGroup();
group.add(rb1);
group.add(rb2);
}
使用按钮组…
ButtonGroup group = new ButtonGroup();
JRadioButton mbutt1 = new JRadioButton("Yes");
JRadioButton mbutt2 = new JRadioButton("No");
group.add(mbutt1);
group.add(mbutt2);
使用按钮组…
ButtonGroup group = new ButtonGroup();
JRadioButton mbutt1 = new JRadioButton("Yes");
JRadioButton mbutt2 = new JRadioButton("No");
group.add(mbutt1);
group.add(mbutt2);
很明显,你还有很多学习和学习要做。这里是解决这个问题的(许多)方法之一
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.EmptyBorder;
public class Test extends JFrame {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
new Test().setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
private JPanel cards;
private CardLayout cardLayout;
private static final String studentTag = "student";
private static final String teacherTag = "teacher";
public Test() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
JPanel contentPane = new JPanel(new GridLayout(2,1));
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
add(contentPane);
JPanel radioPanel = new JPanel(new GridLayout(0,1));
JRadioButton studentButton = new JRadioButton("Student");
studentButton.setActionCommand(studentTag);
studentButton.setSelected(true);
JRadioButton teacherButton = new JRadioButton("Teacher");
teacherButton.setActionCommand(teacherTag);
ButtonGroup group = new ButtonGroup();
group.add(studentButton);
group.add(teacherButton);
radioPanel.add(studentButton);
radioPanel.add(teacherButton);
contentPane.add(radioPanel);
cardLayout = new CardLayout();
cards = new JPanel(cardLayout);
JPanel studentCard = new JPanel(new BorderLayout());
studentCard.add(new Label("Student card"), BorderLayout.CENTER);
JPanel teacherCard = new JPanel(new BorderLayout());
teacherCard.add(new Label("Teacher card"), BorderLayout.CENTER);
cards.add(studentCard, studentTag);
cards.add(teacherCard, teacherTag);
contentPane.add(cards);
ActionListener listener = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
cardLayout.show(cards, e.getActionCommand());
}
};
studentButton.addActionListener(listener);
teacherButton.addActionListener(listener);
pack();
}
}
很明显,你还有很多学习和学习要做。这里是解决这个问题的(许多)方法之一
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.EmptyBorder;
public class Test extends JFrame {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
new Test().setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
private JPanel cards;
private CardLayout cardLayout;
private static final String studentTag = "student";
private static final String teacherTag = "teacher";
public Test() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
JPanel contentPane = new JPanel(new GridLayout(2,1));
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
add(contentPane);
JPanel radioPanel = new JPanel(new GridLayout(0,1));
JRadioButton studentButton = new JRadioButton("Student");
studentButton.setActionCommand(studentTag);
studentButton.setSelected(true);
JRadioButton teacherButton = new JRadioButton("Teacher");
teacherButton.setActionCommand(teacherTag);
ButtonGroup group = new ButtonGroup();
group.add(studentButton);
group.add(teacherButton);
radioPanel.add(studentButton);
radioPanel.add(teacherButton);
contentPane.add(radioPanel);
cardLayout = new CardLayout();
cards = new JPanel(cardLayout);
JPanel studentCard = new JPanel(new BorderLayout());
studentCard.add(new Label("Student card"), BorderLayout.CENTER);
JPanel teacherCard = new JPanel(new BorderLayout());
teacherCard.add(new Label("Teacher card"), BorderLayout.CENTER);
cards.add(studentCard, studentTag);
cards.add(teacherCard, teacherTag);
contentPane.add(cards);
ActionListener listener = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
cardLayout.show(cards, e.getActionCommand());
}
};
studentButton.addActionListener(listener);
teacherButton.addActionListener(listener);
pack();
}
}
我可以在表格上找到两个按钮。但问题是,如果我点击学生或教师,其各自的形式不会open@user1390517-当您单击相应按钮时,是否添加了监听器来为您执行该操作?你基本上会想处理你的事件。如果您不知道如何使用侦听器,这里还有一个参考:我可以在表单上获得两个按钮。但问题是,如果我点击学生或教师,其各自的形式不会open@user1390517-当您单击相应按钮时,是否添加了监听器来为您执行该操作?你基本上会想处理你的事件。如果您不知道如何使用侦听器,下面是另一个参考: