package FinalData;

import java.awt.Component;

import java.awt.Container;

import java.awt.FlowLayout;

import javax.swing.AbstractListModel;

import javax.swing.ComboBoxModel;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JLabel;

public class JCoboBoxModelTest extends JFrame{

JComboBox<String>jc=new JComboBox<>(new MyComboBox());

JLabel jl=new JLabel("请选择证件");

private Container cp;

public void JComboBoxModelTest(){

cp.setLayout(new FlowLayout());

cp.add(jl);

cp.add(jc);

}

public static void main(String[] args) {

}

class MyComboBox extends AbstractListModel<String>implements ComboBoxModel<String>{

String selecteditem=null;

String[] test= {"身份证","军人证","学生证","工作证"};

public String getElementAt(int index){

return test[index];

}

public int getSize() {

return test.length;

}

public void setSelectedItem(Object item) {

selecteditem=(String)item;

}

public Object getSelectedItem() {

return selecteditem;

}

}

}