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828天前import java.awt.BorderLayout; |
import java.awt.Color; |
import java.awt.event.ActionEvent; |
import java.awt.event.ActionListener; |
import javax.swing.BorderFactory; |
import javax.swing.JButton; |
import javax.swing.JFrame; |
import javax.swing.JLabel; |
import javax.swing.JPanel; |
public class T2 extends JFrame{ |
private JButton hongse = new JButton("红色"); |
private JButton huangse = new JButton("黄色"); |
private JButton lvse= new JButton("绿色"); |
private JButton chengse = new JButton("橙色"); |
private JButton lanse = new JButton("蓝色"); |
private JLabel text = new JLabel("这里是一段话"); |
private JPanel jp1 = new JPanel(); |
private JPanel jp2 = new JPanel(); |
|
public T2(){ |
//初始化画框 |
this.setTitle("按钮事件"); |
this.setSize(800, 600); |
this.setDefaultCloseOperation(2); |
this.setVisible(true); |
|
//把控件添加到画板 |
this.jp1.add(hongse); |
this.jp1.add(huangse); |
this.jp1.add(lvse); |
this.jp1.add(chengse); |
this.jp1.add(lanse); |
this.jp2.add(text); |
|
this.add(jp1,BorderLayout.NORTH); |
this.add(jp2); |
|
//给jp1加个边框 |
this.jp1.setBorder(BorderFactory.createTitledBorder("改变颜色")); |
//给jp2加个颜色 |
this.jp2.setBackground(Color.lightGray); |
|
//给按钮添加事件 |
this.hongse.addActionListener(new ActionListener() { |
|
@Override |
public void actionPerformed(ActionEvent e) { |
text.setForeground(Color.red); |
} |
}); |
this.huangse.addActionListener(new ActionListener() { |
|
@Override |
public void actionPerformed(ActionEvent e) { |
text.setForeground(Color.yellow); |
} |
}); |
this.lvse.addActionListener(new ActionListener() { |
|
@Override |
public void actionPerformed(ActionEvent e) { |
text.setForeground(Color.green); |
} |
}); |
this.chengse.addActionListener(new ActionListener() { |
|
@Override |
public void actionPerformed(ActionEvent e) { |
text.setForeground(Color.orange); |
} |
}); |
this.lanse.addActionListener(new ActionListener() { |
|
@Override |
public void actionPerformed(ActionEvent e) { |
text.setForeground(Color.blue); |
} |
}); |
} |
|
public static void main(String[] args) { |
new T2(); |
} |
|
} |
