list.java

PhoneBook主要的功能是查找、添加、删除、编辑用户mainclass WelcomeWindow

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class list extends JFrame{
	private JList l;
	private String[] a = {"a","b","c","d","e","f","g","h","i"};
	private String[] d ={"fds","gresg"};
	private Container container;
	private JButton b;
	private DefaultListModel model;
	
	public list(){
		container = getContentPane();
		model = new DefaultListModel();
		
		l = new JList(a);
		container.add(new JScrollPane(l));
		b = new JButton("delete");
		b.addActionListener(
			new ActionListener(){
				public void actionPerformed(ActionEvent event){
						ListModel leftLM = l.getModel();   
					    int leftSelected = l.getSelectedIndex();    
					    Object selectedItem = l.getSelectedValue(); 
					        
					    DefaultListModel leftDLM = new DefaultListModel();  
					    for(int i=0;i<leftLM.getSize();i++){
					        if(i == leftSelected){
					            continue;
					        }
					        else{
					            leftDLM.addElement(leftLM.getElementAt(i)); 
					        }
					    }//for
					    l.setModel(leftDLM);
					//l.setListData(d);
				}
			}
		);
		container.add(b,BorderLayout.SOUTH);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
		setSize(200,200);
	}
	
	public static void main(String args[]){
		list n = new list();
	}
}

/*
DefaultListModel listModel = new DefaultListModel();
JList lstMember = new JList (listModel);
...
listModel.addElement("one");
listModel.addElement("two");


private void jButtonMoveItemsActionPerformed(java.awt.event.ActionEvent evt) {                                                 
        //get access through interface ListModel to left and Right JLists's models
        ListModel leftLM = jListLeft.getModel();        
        ListModel rightLM = jListRight.getModel();
        
        int leftSelected = jListLeft.getSelectedIndex();    //index of selected Left JList item
        Object selectedItem = jListLeft.getSelectedValue(); //value of selected Left JList item
        
        DefaultListModel leftDLM = new DefaultListModel();  //Create new instance of DefaultListModel for left JList
        DefaultListModel rightDLM = new DefaultListModel(); //Create new instance of DefaultListModel for right JList
        
        //copy existing items to DefaultListModel
        for(int i=0;i<leftLM.getSize();i++){
            if(i == leftSelected){  //but we have to skip selected item
                    continue;
            }//if
            else{
                leftDLM.addElement(leftLM.getElementAt(i)); //element added
            }//else
        }//for
        jListLeft.setModel(leftDLM);//set new model for left JList without "deleted" item
        System.out.println(leftDLM);//let's print it and see the new model
        
        //copy items from right ListModel to new DefaultListModel
        for(int i=0;i<rightLM.getSize();i++){   
           rightDLM.addElement(rightLM.getElementAt(i));
        }
        rightDLM.addElement(selectedItem);  //Item from left List added
        
        jListRight.setModel(rightDLM);  //set new model with added item
        System.out.println(rightDLM);   //let's print and see the new model
        
       //accomplished!!!! Yah!!!
    } 
	*/