java 圆形面板_Java窗口（JFrame）从零开始（5）——JPanel面板+JScrollPane面板

JPanel面板

package jframe;

import java.awt.Container;

import java.awt.GridLayout;

import javax.swing.*;

public class jframe extends JFrame{

/**

*

*/

private static final long serialVersionUID = 1L;

public jframe(){

this.setTitle("test");

Container con = this.getContentPane();

JPanel p1 = new JPanel(new GridLayout(1,2,5,5)); //实例化两个JPanel面板

JPanel p2 = new JPanel(new GridLayout(2,1,5,5));

p1.add(new JButton("1")); //加入按钮

p1.add(new JButton("1"));

p2.add(new JButton("2"));

p2.add(new JButton("2"));

con.setLayout(new GridLayout(2,1,10,10));

con.add(p1);

con.add(p2);

this.setVisible(true);

this.setBounds(50, 50, 200, 200);

this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); //设置关闭方式，可以选择多种关闭玄子选项

}

public static void main(String[] args) {

new jframe();

}

}

JScrollPane面板(带滚动条的面板)

package jframe;

import java.awt.Container;

import javax.swing.*;

public class jframe extends JFrame{

/**

*

*/

private static final long serialVersionUID = 1L;

public jframe(){

this.setTitle("test");

Container con = this.getContentPane();

JScrollPane jp = new JScrollPane(new JTextArea(50,20)); //实例化一个面板，加入一个文字编辑器

con.add(jp);

this.setVisible(true);

this.setBounds(50, 50, 200, 200);

this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); //设置关闭方式，可以选择多种关闭玄子选项

}

public static void main(String[] args) {

new jframe();

}

}