问题描述

java 为什么Dialog中的Label不显示?

为什么 在Dialog中add 一个Lable但运行的时候并没有显示? 求大神

import java.awt.Button;
import java.awt.Dialog;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;

public class MyFrame
{
private Frame frame ;
private Button butCount;
private Button butClear;
private TextField tf ;
private TextArea ta ;
private TextField answer;

public void init(){    //定义组建    frame = new Frame(""统计代码行数软件--by Owen"");    butCount = new Button(""统计"");    butClear = new Button(""结果清零"");    tf = new TextField(""请输入要计算的文件夹路径""  60);    tf.selectAll();     //设置将初始的""请输入要计算的文件夹路径""全选    ta = new TextArea(25  75);    answer = new TextField(40);    //向面板添加组建    frame.add(tf);    frame.add(butCount);    frame.add(butClear);    frame.add(ta);    frame.add(answer);    //设置面板    frame.setVisible(true);    frame.setBounds(300100630500);    frame.setLayout(new FlowLayout());    //引入事件    eventFrame();    eventButton();    eventText();}//窗体事件public void eventFrame(){    //添加面板监听器    frame.addWindowListener(new WindowAdapter(){        public void windowClosing(WindowEvent e)        {            System.exit(0);        }    }); }//按钮事件public void eventButton(){    //添加butCount监听器    butCount.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent e)        {            action();        }    });    //添加butClear监听器    butClear.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent e)        {            Print.count = 0;            ta.setText("""");            tf.setText("""");            answer.setText("""");        }    });}//文本事件public void eventText(){    tf.addKeyListener(new KeyAdapter(){        public void keyPressed(KeyEvent e)        {            if(e.getKeyCode() == KeyEvent.VK_ENTER)                action();        }    });}//操作部分private void action(){    String address = tf.getText();    //健壮性检验    File check = new File(address);    if( !(check.exists() && check.isDirectory() ))        popDialog(address);    String[] files = Print.traDir(address);    for(int i=0 ; i<files.length ; i++)    {        ta.append(files[i]);    }    ta.append(""rn"");    ta.append(""rn"");    ta.append(""----------------------------------------------"");    ta.append(""rn"");    ta.append(""rn"");    int count = Print.count;    answer.setText(""结果:  ""+count+""   行代码"");}//弹出对话框------------------这里没有弹出------------------?????????????????????private void popDialog(String address){    //定义弹出窗口口    Dialog wrongDialog = new Dialog(frame地址错误提示"" false);    Label wrongLabel = new Label();    Button wrongButton = new Button(""确定"");    wrongDialog.add(wrongLabel);    wrongDialog.add(wrongButton);    wrongDialog.setBounds(320  250  600  150);    wrongDialog.setLayout(new FlowLayout());    wrongDialog.setVisible(true);    String info = ""输入地址 "" ""+address+"" ""有误请重新输入"";    wrongLabel.setText(info);    popEvent(wrongDialog wrongLabel wrongButton);}//弹出对话框 --监听器private void popEvent(Dialog wrongDialog Label wrongLabel Button wrongButton){    wrongDialog.addWindowListener(new WindowAdapter(){        public void windowClosing(WindowEvent e)        {            wrongDialog.setVisible(false);        }    });     wrongButton.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent e)        {            wrongDialog.setVisible(false);        }    }); }

}

解决方案

为什么我的可以弹出啊 来了来了。。。。

解决方案二：
为什么我的可以弹出啊 来了来了。。。。