java图形界面设计，哪里错了，求指教
我分别用了三个class，最后一个是作为处理图形用户界面的，调用界面设置的信息总是提示错误，这是为什么呢
球高手指教谢谢
package unit10;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
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.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
public class frame {
public static void main(String[] args) {
people w=new people();
}
}
class people extends JFrame{
public Object text1;
people(){
setSize(400,350);
setLocation(100,100);
setResizable(false);
PoliceStation police;
JLabel label=new JLabel("用户信息填写",JLabel.CENTER);
label.setFont(new Font(null, Font.BOLD,35));
label.setForeground(Color.blue);
add(label,BorderLayout.NORTH);
JPanel pane1=new JPanel();
JPanel pane2=new JPanel();
JPanel pane3=new JPanel();
JPanel pane4=new JPanel();
JPanel pane5=new JPanel();
JPanel pane6=new JPanel();
JPanel pane7=new JPanel();
JPanel pane8=new JPanel();
JPanel pane9=new JPanel();
JLabel label1=new JLabel("姓名：");
JTextField text1=new JTextField(18);
JLabel label2=new JLabel("学号：");
JTextField text2=new JTextField(18);
JLabel label3=new JLabel("性别：");
JRadioButton button1=new JRadioButton("男");
JRadioButton button2=new JRadioButton("女");
JLabel label4=new JLabel("省份：");
JComboBox bobox=new JComboBox();
bobox.addItem("湖北");
bobox.addItem("河南");
bobox.addItem("重庆");
bobox.addItem("四川");
bobox.addItem("山东");
JLabel label5=new JLabel("爱好：");
JCheckBox box1=new JCheckBox("计算机");
JCheckBox box2=new JCheckBox("数学");
JCheckBox box3=new JCheckBox("英语");
JLabel label6=new JLabel("备注：");
JTextField text3=new JTextField(18);
pane1.add(label1);
pane1.add(text1);
pane2.add(label2);
pane2.add(text2);
pane3.add(label3);
pane3.add(button1);
pane3.add(button2);
pane4.add(label4);
pane4.add(bobox);
pane5.add(label5);
pane5.add(box1);
pane5.add(box2);
pane5.add(box3);
pane6.add(label6);
pane6.add(text3);
pane1.add(pane2);
pane1.add(pane3);
pane1.add(pane4);
pane1.add(pane5);
pane1.add(pane6);
add(pane1,BorderLayout.CENTER);
JButton button11=new JButton("保存");
JButton button12=new JButton("取消");
JButton button13=new JButton("退出");
pane7.add(button11);
pane8.add(button12);
pane9.add(button13);
pane7.add(pane8);
pane8.add(pane9);
add(pane7,BorderLayout.SOUTH);
police=new PoliceStation();
button11.addActionListener(police);
button12.addActionListener(police);
button13.addActionListener(police);
text1.addActionListener(police);
setVisible(true);
}
}
class PoliceStation implements ActionListener {
people p=new people();
public void actionPerformed(ActionEvent e){
String s=e.getActionCommand();
if(s.equals("保存")){
File file=new File("sudentmessage.txt");
String s1=p.label1.toString();
String s2=p.label2.toString();
String s3=p.label3.toString();
String s4=p.label4.toString();
String s5=p.label5.toString();
String s6=p.label6.toString();
try{ FileWriter out=new FileWriter(file);
out.write(s1);
out.write(s2);
out.write(s3);
out.write(s4);
out.write(s5);
out.write(s6);
out.close();
}
catch(IOException q){};
}
else if(s.equals("取消")){
p.text1=null;
p.text2=null;
p.text3=nul;
}
else
System.exit(0);
}
}
[解决办法]
界面帮你搞出来，你还有逻辑问题。。。自己改。
- Java code
import java.awt.BorderLayout;import java.awt.Color;import java.awt.Font;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.JButton;import javax.swing.JCheckBox;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JRadioButton;import javax.swing.JTextField;public class FrameTest { public static void main(String[] args) { People w = new People(); }}class People extends JFrame { JLabel label1,label2,label3,label4,label5,label6;//放到成员变量，其他类才能使用。。 JTextField text1 = new JTextField(18); JTextField text2 = new JTextField(18); JTextField text3 = new JTextField(18); PoliceStation police = null; People() { setSize(400, 350); setLocation(100, 100); setResizable(false); label1 = new JLabel("姓名："); label2 = new JLabel("学号："); label3 = new JLabel("性别："); label4 = new JLabel("省份："); label5 = new JLabel("爱好："); label6 = new JLabel("备注："); JCheckBox box1 = new JCheckBox("计算机"); JCheckBox box2 = new JCheckBox("数学"); JCheckBox box3 = new JCheckBox("英语"); JRadioButton button1 = new JRadioButton("男"); JRadioButton button2 = new JRadioButton("女"); JLabel label = new JLabel("用户信息填写", JLabel.CENTER); label.setFont(new Font(null, Font.BOLD, 35)); label.setForeground(Color.blue); add(label, BorderLayout.NORTH); JPanel pane1 = new JPanel(); JPanel pane2 = new JPanel(); JPanel pane3 = new JPanel(); JPanel pane4 = new JPanel(); JPanel pane5 = new JPanel(); JPanel pane6 = new JPanel(); JPanel pane7 = new JPanel(); JPanel pane8 = new JPanel(); JPanel pane9 = new JPanel(); JComboBox bobox = new JComboBox(); bobox.addItem("湖北"); bobox.addItem("河南"); bobox.addItem("重庆"); bobox.addItem("四川"); bobox.addItem("山东"); pane1.add(label1); pane1.add(text1); pane2.add(label2); pane2.add(text2); pane3.add(label3); pane3.add(button1); pane3.add(button2); pane4.add(label4); pane4.add(bobox); pane5.add(label5); pane5.add(box1); pane5.add(box2); pane5.add(box3); pane6.add(label6); pane6.add(text3); pane1.add(pane2); pane1.add(pane3); pane1.add(pane4); pane1.add(pane5); pane1.add(pane6); add(pane1, BorderLayout.CENTER); JButton button11 = new JButton("保存"); JButton button12 = new JButton("取消"); JButton button13 = new JButton("退出"); pane7.add(button11); pane8.add(button12); pane9.add(button13); pane7.add(pane8); pane8.add(pane9); add(pane7, BorderLayout.SOUTH); police = new PoliceStation(this); button11.addActionListener(police); button12.addActionListener(police); button13.addActionListener(police); text1.addActionListener(police); setVisible(true); }}class PoliceStation implements ActionListener { People p; PoliceStation(People p){//对象传递，哥们。你那样是没用的，不是一个对象 this.p = p; } public void actionPerformed(ActionEvent e){ String s = e.getActionCommand(); if (s.equals("保存")) { File file = new File("sudentmessage.txt"); String s1 = p.label1.getText().toString(); String s2 = p.label2.getText().toString(); String s3 = p.label3.getText().toString(); String s4 = p.label4.getText().toString(); String s5 = p.label5.getText().toString(); String s6 = p.label6.getText().toString(); try { FileWriter out = new FileWriter(file); out.write(s1); out.write(s2); out.write(s3); out.write(s4); out.write(s5); out.write(s6); out.close(); } catch (IOException ex) { ex.printStackTrace(); } } else if (s.equals("取消")) { p.text1.setText(""); p.text2.setText(""); p.text3.setText(""); } else System.exit(0); }}