如何用java制作文件加载器
我已经制作了一个程序,将输入的数据保存在文本字段中。 它的保存技术是这样的如何用java制作文件加载器,java,file,save,joptionpane,filewriter,Java,File,Save,Joptionpane,Filewriter,我已经制作了一个程序,将输入的数据保存在文本字段中。 它的保存技术是这样的 data0 = student number data1 = name data2 = section data3 = cp data4 = email data5 = address data0 | data1 | data2 | data3 | data4 | data5 然后它将所有条目保存在一行文本中,如下所示 data0 = student number data1 = name data2 = secti
data0 = student number
data1 = name
data2 = section
data3 = cp
data4 = email
data5 = address
data0 | data1 | data2 | data3 | data4 | data5
然后它将所有条目保存在一行文本中,如下所示
data0 = student number
data1 = name
data2 = section
data3 = cp
data4 = email
data5 = address
data0 | data1 | data2 | data3 | data4 | data5
但我面临的问题是如何加载字符串并对不同的数据进行切片,然后将其打印到指定的不同文本字段中
顺便说一句,这是我的代码
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JOptionPane;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Jfetizanan
*/
public class DATAPROCCESS extends javax.swing.JFrame {
private static final long serialVersionUID = 1L;
/**
* Creates new form processPOINT
*/
public DATAPROCCESS() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel7 = new javax.swing.JLabel();
Label1 = new javax.swing.JLabel();
jLabel1 = new javax.swing.JLabel();
StudentNO = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
name = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
section = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
cp = new javax.swing.JTextField();
jLabel6 = new javax.swing.JLabel();
email = new javax.swing.JTextField();
jLabel8 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
save = new javax.swing.JButton();
reset = new javax.swing.JButton();
jLabel7.setText("jLabel7");
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setAlwaysOnTop(true);
setBackground(new java.awt.Color(51, 102, 255));
setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
setResizable(false);
Label1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
Label1.setText("STUDENT INFO STORAGE v1");
jLabel1.setText("Student No:");
jLabel2.setText("Name:");
jLabel3.setText("Section:");
jLabel5.setText("Cellphone #:");
jLabel6.setText("E-Mail:");
jLabel8.setText("Address:");
save.setText("Save");
save.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
File file = new File("data.dat");
try {
try (FileWriter writer = new FileWriter(file, true)) {
String data0 = StudentNO.getText();
String data1 = name.getText();
String data2 = section.getText();
String data3 = cp.getText();
String data4 = email.getText();
String data5 = jTextField1.getText();
writer.write(data0+" | "+data1+" | "+data2+" | "+data3+" | "+data4+" | "+data5+"/n");
}
System.out.println("Data Saved");
} catch (IOException | HeadlessException z) {
JOptionPane.showMessageDialog(null, e);
}
}
});
reset.setText("Reset");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Label1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(10, 10, 10)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(1, 1, 1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel4)
.addComponent(jLabel3))))
.addGap(15, 15, 15))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel6)
.addComponent(jLabel5)
.addComponent(jLabel8))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(save, javax.swing.GroupLayout.DEFAULT_SIZE, 136, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(reset, javax.swing.GroupLayout.PREFERRED_SIZE, 138, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(StudentNO)
.addComponent(name)
.addComponent(section)
.addComponent(cp)
.addComponent(email)
.addComponent(jTextField1))
.addGap(0, 13, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(Label1, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(StudentNO, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(section, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(11, 11, 11)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(jLabel4))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(cp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(email, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel8))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(save)
.addComponent(reset))
.addContainerGap(27, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(DATAPROCCESS.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/*
* Create and display the form
*/
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new DATAPROCCESS().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel Label1;
private javax.swing.JTextField StudentNO;
private javax.swing.JTextField cp;
private javax.swing.JTextField email;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField name;
private javax.swing.JButton reset;
private javax.swing.JButton save;
private javax.swing.JTextField section;
// End of variables declaration
}
导入java.awt.HeadlessException;
导入java.awt.event.ActionEvent;
导入java.awt.event.ActionListener;
导入java.io.File;
导入java.io.FileWriter;
导入java.io.IOException;
导入javax.swing.JOptionPane;
/*
*要更改此模板,请选择工具|模板
*然后在编辑器中打开模板。
*/
/**
*
*@作者Jfetizanan
*/
公共类DataProcess扩展了javax.swing.JFrame{
私有静态最终长serialVersionUID=1L;
/**
*创建新表单processPOINT
*/
公共数据处理(){
初始化组件();
}
/**
*从构造函数中调用此方法来初始化表单。
*警告:不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告(“未选中”)
//
私有组件(){
jLabel7=newjavax.swing.JLabel();
Label1=newjavax.swing.JLabel();
jLabel1=newjavax.swing.JLabel();
StudentNO=newjavax.swing.JTextField();
jLabel2=newjavax.swing.JLabel();
name=newjavax.swing.JTextField();
jLabel3=newjavax.swing.JLabel();
section=newjavax.swing.JTextField();
jLabel4=newjavax.swing.JLabel();
jLabel5=newjavax.swing.JLabel();
cp=newjavax.swing.JTextField();
jLabel6=newjavax.swing.JLabel();
email=newjavax.swing.JTextField();
jLabel8=newjavax.swing.JLabel();
jTextField1=newjavax.swing.JTextField();
save=newjavax.swing.JButton();
reset=newjavax.swing.JButton();
jLabel7.setText(“jLabel7”);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setAlwaysOnTop(真);
挫折背景(新java.awt.Color(51102255));
setCursor(新java.awt.Cursor(java.awt.Cursor.DEFAULT_Cursor));
可设置大小(假);
标签1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
标签1.setText(“学生信息存储v1”);
jLabel1.setText(“学生编号:”);
jLabel2.setText(“名称:”);
jLabel3.setText(“节:”);
jLabel5.setText(“手机:”;
jLabel6.setText(“电子邮件:”);
jLabel8.setText(“地址:”);
save.setText(“save”);
save.addActionListener(新建ActionListener()){
@凌驾
已执行的公共无效操作(操作事件e){
File File=新文件(“data.dat”);
试一试{
try(FileWriter=newfilewriter(file,true)){
字符串data0=StudentNO.getText();
字符串data1=name.getText();
字符串data2=section.getText();
字符串data3=cp.getText();
字符串data4=email.getText();
字符串data5=jTextField1.getText();
write.write(data0+“|”+data1+“|”+data2+“|”+data3+“|”+data4+“|”+data5+”/n);
}
System.out.println(“保存的数据”);
}捕获(IOException | HeadlessException z){
showMessageDialog(null,e);
}
}
});
reset.setText(“reset”);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(Label1,javax.swing.GroupLayout.DEFAULT\u SIZE,javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u值)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(10,10,10)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING,false)
.addComponent(jLabel1,javax.swing.GroupLayout.DEFAULT\u SIZE,javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u值)
.addComponent(jLabel2,javax.swing.GroupLayout.DEFAULT\u SIZE,javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(1,1,1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.training)
.addComponent(jLabel4)
.addComponent(jLabel3)))
.addGap(15,15,15))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax
String delimiter = "|";
temp = str.split(delimiter);
for(int i =0; i < temp.length ; i++) {
System.out.println(temp[i]); //you will get data here
}
try{
FileInputStream fstream = new FileInputStream("data.dat");
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;
while ((strLine = br.readLine()) != null) {
if (strLine.startsWith("Give your data0 here")){
String delimiter = "|";
temp = str.split(delimiter);
for(int i =0; i < temp.length ; i++) {
System.out.println(temp[i]); //you will get data here
}
}
}
in.close();
}catch (Exception e){
System.err.println("Error: " + e.getMessage());
}