Java-常用面板

import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class Testone extends JFrame{
public Testone(){
setTitle("面板使用");
setSize(300,300);
setVisible(true);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
Container a=getContentPane();
a.setLayout(new GridLayout(2,1,10,10));//容器设置为2行1列
JPanel b=new JPanel(new GridLayout(1,4,10,10));//面板容器设置为1行4列
JPanel c=new JPanel(new GridLayout(1,2,10,10));//面板容器设置为1行2列
JPanel d=new JPanel(new GridLayout(1,2,10,10));//面板容器设置为1行2列
JPanel e=new JPanel(new GridLayout(2,1,10,10));//面板容器设置为2行1列
b.add(new JButton("1"));
b.add(new JButton("1"));
b.add(new JButton("2"));
b.add(new JButton("3"));
c.add(new JButton("4"));
c.add(new JButton("5"));
d.add(new JButton("6"));
d.add(new JButton("7"));
e.add(new JButton("8"));
e.add(new JButton("9"));
a.add(b);
a.add(c);
a.add(d);
a.add(e);

}
public static void main(String[] args){
new Testone();
}
}

import java.awt.Container;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.WindowConstants;

public class Testone extends JFrame{
public Testone(){
setSize(300,300);
setTitle("带滚动条的文字编辑器");
setVisible(true);
Container a=getContentPane();
JTextArea b=new JTextArea(20,50);//创建文本区域组件
JScrollPane c=new JScrollPane(b);
a.add(c);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
}
public static void main(String[] args){
new Testone();
}
}