BorderLayout的布局

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import javax.swing.*;import java.awt.*;public class Button1{public static void main(String [] args){Button1 gui=new Button1();gui.go();}public void go(){JFrame frame = new JFrame();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JButton button = new JButton("Click This!");Font bigFont=new Font("serif",Font.BOLD,28);//更大的字体会强迫框架留更大的高度给按钮button.setFont(bigFont);frame.getContentPane().add(BorderLayout.NORTH,button);frame.setSize(200,200);frame.setVisible(true);}}

import javax.swing.*;import java.awt.*;public class Button2{public static void main(String [] args){Button2 gui=new Button2();gui.go();}public void go(){JFrame frame = new JFrame();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JButton  east= new JButton("East");JButton west=new JButton("West");JButton north=new JButton("North");JButton south=new JButton("South");JButton center=new JButton("Center");frame.getContentPane().add(BorderLayout.NORTH,north);frame.getContentPane().add(BorderLayout.SOUTH,south);frame.getContentPane().add(BorderLayout.WEST,west);frame.getContentPane().add(BorderLayout.EAST,east);frame.getContentPane().add(BorderLayout.CENTER,center);frame.setSize(300,300);frame.setVisible(true);}}

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