Question

如何获取JPanel中被选中的JCheckBox

initComponents();
PermissionCrud pc = new PermissionCrud();
ArrayList list = pc.Query();
Iterator it = list.iterator();
QxPanel.setPreferredSize(new Dimension(170,300));
QxPanel.setLayout(new GridLayout(list.size()/1+1, 1));
QxPanel.setBorder(BorderFactory.createTitledBorder("dddddd"));
for(int i =0;i<list.size();i++){
String name = (String)it.next();
QxPanel.add(new JCheckBox(name));

Answer 1

容器组件，有方法 getComponents() 得到 Component[]。再判断是否JCheckBox，即可以取得Checked状态

Answer 2

public List<JCheckBox> getSelectedBox(){
List<JCheckBox> list = new ArrayList<JCheckBox>();
Component[] comps = panel.getComponents();
if(comps.length > 0){
for(int i=0; i<comps.length; i++){
Component comp = comps[i];
if(comp instanceof JCheckBox){
JCheckBox box = (JCheckBox)comp;
if(box.isSelected()){
list.add(box);
}
}
}
return list;
}