~~~ package gui.a3; import java.awt.*; import javax.swing.*; //流式布局管理器 public class Test extends JFrame{ JButton[] an={null,null,null,null,null,null,null,null}; public static void main(String[] args) { Test lx=new Test(); } public Test(){ an[0]=new JButton("话梅"); an[1]=new JButton("果浦"); an[2]=new JButton("薯片"); an[3]=new JButton("饼干"); an[4]=new JButton("巧克力"); an[5]=new JButton("腰果"); an[6]=new JButton("锅巴"); an[7]=new JButton("开心果"); //this.setLayout(new FlowLayout()); //由于java默认的是边界布局管理器，添加布局管理器，以免添加出现错误。 this.setLayout(new FlowLayout(FlowLayout.LEFT)); //this.setLayout(new FlowLayout(FlowLayout.RIGHT)); this.add(an[0]); this.add(an[1]); this.add(an[2]); this.add(an[3]); this.add(an[4]); this.add(an[5]); this.add(an[6]); this.add(an[7]); this.setTitle("流式布局FlowLayout"); this.setSize(380,120); this.setLocation(200,200); this.setResizable(false); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setVisible(true); } } ~~~