新建 文本文档.txt

java布局管理器嵌套综合使用

import java.awt.*;    // Java core packages
import javax.swing.*; // Java extension packages

public class J_FlowFlowLayout
{
    public static void main( String args[] )
    { 
        JFrame app = new JFrame("Multiple Layouts");

        Container cp = app.getContentPane();
        cp.setLayout(new FlowLayout());
        JPanel []  p= new JPanel[3];
        for (int i= 0; i< 3; i++)
        {
            p[i]= new JPanel();
            p[i].setLayout( new FlowLayout() );
            cp.add( p[i] );
        }
JButton [] b= new JButton[6];
        for (int i= 0; i< 6; i++)
        {
            String s= "Button " + (i+1);
            b[i]= new JButton(s);
            int j= (i==0 ? 0 : (i/3)+1);
            p[j].add( b[i] );
        } // End of loop: for

        app.setSize( 280, 170 );
        app.setVisible( true );
        app.setDefaultCloseOperation
              (JFrame.EXIT_ON_CLOSE );
    } // End of method: main

} // End of class: J_FlowFlowLayout