获取JToggleButton的状态

您还可以使用itemListener的itemStateChanged方法，如下所示：

JToggleButton jtb = new JToggleButton("Press Me");jtb.addItemListener(new ItemListener() {   public void itemStateChanged(ItemEvent ev) {      if(ev.getStateChange()==ItemEvent.SELECTED){        System.out.println("button is selected");      } else if(ev.getStateChange()==ItemEvent.DESELECTED){        System.out.println("button is not selected");      }   }});

并且您想知道

jtb

isSelected()

System.out.println(jtb.isSelected());if(jtb.isSelected()){    System.out.println("button is selected");} else {    System.out.println("button is not selected");}