import java.awt.*;
import java.awt.Event.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.*;public class ChatWindow extends JFrame {
public static void main(String[] args) {
new ChatWindow().launchFrame();
} private void launchFrame() {
setLayout(null);
JPanel main = new JPanel();
main.setLayout(null);
JLabel jl = new JLabel();
jl.setBounds(0,0,330,20);
jl.setText("你正在与XXX聊天");
main.add(jl);
JTextArea ta = new JTextArea(100,150);
ta.setBounds(0,20,330,260);
ta.setText("");
JLabel jl1 = new JLabel("dfsdf");
jl1.setBounds(330,20,140,226);
ImageIcon im = new ImageIcon("./image/girl.gif");
jl1.setIcon(im);
main.add(jl1);
JTextArea ta1 = new JTextArea(50,150);
ta1.setBounds(0,260,330,100);
ta1.setText("");
JButton jclose = new JButton("关闭");
jclose.setBounds(200,365,50,20);
jclose.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
System.exit(0);
}
});
JButton jsend = new JButton("发送");
jsend.setBounds(280,365,50,20);
main.add(jclose);
main.add(jsend);
main.add(ta);
main.add(ta1);
add(main);
setLocation(280,150);
setSize(470,420);
setVisible(true);
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
}为什么我用javax.swing.*中的控件就不显示任何东西,而我要是改为 java.awt.*中的控件就都显示正常,但是我要使用以J开头的控件,该怎么办?谢谢解答!
可能出现显示问题
用awt就用awt
你们还是没说出原因 你把代码运行下就晓得了
这到底是什么问题 呢 ?为什么我全改成不带J的就可以运行 改为J的控件根本就不显示
这问题真的很闹心
哪位解答下 ?我没有混用这些 就算把所有的控件都用swing也一样显示不出来
请大家帮下吧!
你先把代码优化下,
实在不行,你只用J的
先从Jpane开始
Jframe 这些肯定能出来吧
,,一步步找到错误
加一句 main.setSize(470,420); 就OK了.
setLocation(280,150);
setSize(470,420);
setVisible(true);
main组件有设置大小啊。
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;public class ChatWindow extends JFrame { public static void main(String[] args) {
new ChatWindow().launchFrame();
} private void launchFrame() {
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// setLayout(null);//这行有问题,你干什么要在这里做这个动作啊??不明白
JPanel main = new JPanel();
main.setLayout(null); JLabel jl = new JLabel();
jl.setBounds(0, 0, 330, 20);
jl.setText("你正在与XXX聊天");
main.add(jl); JTextArea ta = new JTextArea(100, 150);
ta.setBounds(0, 20, 330, 260);
ta.setText(""); JLabel jl1 = new JLabel("dfsdf");
jl1.setBounds(330, 20, 140, 226);
ImageIcon im = new ImageIcon("./image/girl.gif");
jl1.setIcon(im);
main.add(jl1); JTextArea ta1 = new JTextArea(50, 150);
ta1.setBounds(0, 260, 330, 100);
ta1.setText(""); JButton jclose = new JButton("关闭");
jclose.setBounds(200, 365, 50, 20);
jclose.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
System.exit(0);
}
}); JButton jsend = new JButton("发送");
jsend.setBounds(280, 365, 50, 20); main.add(jclose);
main.add(jsend);
main.add(ta);
main.add(ta1);
add(main); setLocation(280, 150);
setSize(470, 420);
setVisible(true); }
}