Jbtn2 = new JButton("bbbbb");
// Jbtn2.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 6));//中间对齐,...Jbtn3 = new JButton("ccccc");
// Jbtn3.setLayout(new FlowLayout(FlowLayout.RIGHT, 5, 6));//右对齐...Jbtn1 = new JButton("aaaaa");
// Jbtn1.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 6));//左对齐...布局管理器将容器划分为大小相等的若干行乘若干列的网格,
组件大小随容器大小而变化。...(3,3,10,20));//(行,列,水平间距,垂直间距);
String strJbtns[] = {"一","二","三","四","五","六","七","八"};