求一段JAVA代码实例代码

this.setBounds(100, 300, 400, 150);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.getContentPane().setLayout(new java.awt.GridLayout(3, 3));jCheckBoxs = new JCheckBox[3];jCheckBoxs[0] = new JCheckBox("足球", true);// 默认为选中 jCheckBoxs[1] = new JCheckBox...