import java.awt.*;
import java.awt.event.*;
public class Test extends Frame implements ActionListener {
Frame win1=new Frame("对话框的父窗口");
TextArea ta1=new TextArea("显示对话框的有关信息");
Button bt1=new Button("显示对话框");
Test() {
win1.addWindowListener(new win1());
win1.add(bt1,BorderLayout.NORTH);
bt1.addActionListener(this);
win1.add(ta1,BorderLayout.CENTER);
win1.setSize(400,200);
win1.setVisible(true);
}
public static void main(String[] args) {
new Test();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt1) {
Mydialog dlg=new Mydialog(this,"自定义对话框",true);
dlg.setVisible(true);
}
}
class win1 extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
class Mydialog extends Dialog implements ActionListener {
Button bt2=new Button("OK");
Mydialog(Dialog owner,String title,boolean modal) {
super(owner,title,modal);
setTitle("自定义对话框");
setSize(200,140);
setLayout(new FlowLayout(FlowLayout.CENTER));
add(bt2);
bt2.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt2) {
ta1.append("你打开了对话框\n");
dispose();
}
}
}
}编译结果:Test.java:20: 找不到符号
符号: 构造函数 Mydialog(Test,java.lang.String,boolean)
位置: 类 Test.Mydialog
Mydialog dlg=new Mydialog(this,"自定义对话框",true);
^
1 错误
import java.awt.event.*;
public class Test extends Frame implements ActionListener {
Frame win1=new Frame("对话框的父窗口");
TextArea ta1=new TextArea("显示对话框的有关信息");
Button bt1=new Button("显示对话框");
Test() {
win1.addWindowListener(new win1());
win1.add(bt1,BorderLayout.NORTH);
bt1.addActionListener(this);
win1.add(ta1,BorderLayout.CENTER);
win1.setSize(400,200);
win1.setVisible(true);
}
public static void main(String[] args) {
new Test();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt1) {
Mydialog dlg=new Mydialog(this,"自定义对话框",true);
dlg.setVisible(true);
}
}
class win1 extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
class Mydialog extends Dialog implements ActionListener {
Button bt2=new Button("OK");
Mydialog(Dialog owner,String title,boolean modal) {
super(owner,title,modal);
setTitle("自定义对话框");
setSize(200,140);
setLayout(new FlowLayout(FlowLayout.CENTER));
add(bt2);
bt2.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt2) {
ta1.append("你打开了对话框\n");
dispose();
}
}
}
}编译结果:Test.java:20: 找不到符号
符号: 构造函数 Mydialog(Test,java.lang.String,boolean)
位置: 类 Test.Mydialog
Mydialog dlg=new Mydialog(this,"自定义对话框",true);
^
1 错误
import java.awt.event.*;
public class Test extends Frame implements ActionListener {
Frame win1=new Frame("对话框的父窗口");
TextArea ta1=new TextArea("显示对话框的有关信息");
Button bt1=new Button("显示对话框");
Test() {
win1.addWindowListener(new win1());
win1.add(bt1,BorderLayout.NORTH);
bt1.addActionListener(this);
win1.add(ta1,BorderLayout.CENTER);
win1.setSize(400,200);
win1.setVisible(true);
}
public static void main(String[] args) {
new Test();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt1) {
Mydialog dlg=new Mydialog(null,"自定义对话框",true);//第一個參數設置dialog的擁有者,這裡樓主寫的this,表示一個監聽吧,應該是!這裡也可以不設他的擁有者,所以只要是null就ok了
dlg.setVisible(true);
}
}
class win1 extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
class Mydialog extends Dialog implements ActionListener {
Button bt2=new Button("OK");
Mydialog(Dialog owner,String title,boolean modal) {
super(owner,title,modal);
setTitle("自定义对话框");
setSize(200,140);
setLayout(new FlowLayout(FlowLayout.CENTER));
add(bt2);
bt2.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt2) {
ta1.append("你打开了对话框\n");
dispose();
}
}
}
}
import java.awt.event.*;
public class Test extends Frame implements ActionListener {
Frame win1=new Frame("对话框的父窗口");
TextArea ta1=new TextArea("显示对话框的有关信息");
Button bt1=new Button("显示对话框");
Test() {
win1.addWindowListener(new win1());
win1.add(bt1,BorderLayout.NORTH);
bt1.addActionListener(this);
win1.add(ta1,BorderLayout.CENTER);
win1.setSize(400,200);
win1.setVisible(true);
}
public static void main(String[] args) {
new Test();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt1) {//这里的第一个参数类型不正确
Mydialog dlg=new Mydialog(this,"自定义对话框",true);
dlg.setVisible(true);
}
}
class win1 extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
class Mydialog extends Dialog implements ActionListener {
Button bt2=new Button("OK");
Mydialog(Dialog owner,String title,boolean modal) {
super(owner,title,modal);
setTitle("自定义对话框");
setSize(200,140);
setLayout(new FlowLayout(FlowLayout.CENTER));
add(bt2);
bt2.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt2) {
ta1.append("你打开了对话框\n");
dispose();
}
}
}
}
import java.awt.event.*;
public class Test extends Frame implements ActionListener {
Frame win1=new Frame("对话框的父窗口");
TextArea ta1=new TextArea("显示对话框的有关信息");
Button bt1=new Button("显示对话框");
Test() {
win1.addWindowListener(new win1());
win1.add(bt1,BorderLayout.NORTH);
bt1.addActionListener(this);
win1.add(ta1,BorderLayout.CENTER);
win1.setSize(400,200);
win1.setVisible(true);
}
public static void main(String[] args) {
new Test();
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt1) {
dialog dlg=new dialog(this,true);
dlg.setVisible(true);
}
}
class win1 extends WindowAdapter {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
class dialog extends Dialog implements ActionListener {
Button bt2=new Button("OK");
dialog(Frame owner,boolean modal) {
super(owner,modal);
setTitle("自定义对话框");
setSize(200,140);
setLayout(new FlowLayout(FlowLayout.CENTER));
add(bt2);
bt2.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==bt2) {
ta1.append("你打开了对话框\n");
dispose();
}
}
}
} 结帖给分