小KTV学习-4

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

public class Update extends JFrame implements ActionListener{
/**
*
*/
private static final long serialVersionUID = 1L;
List<Song> list=new Vector<Song>();
Oper op=new Oper();
File f=new File("F:Summer/java2/KTV.data");
//声明所需组件
JPanel jp1;
JPanel jp2;
JPanel jp3;
JLabel ktv;
JButton update;
JButton quit;
JList jlist;
DefaultListModel df;
JScrollPane jsp;
JTextArea jta;
public Update(){
jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
ktv=new JLabel("./src/image/KTV3.jpg");
update=new JButton("修改歌曲");
quit=new JButton("取消");
jta=new JTextArea(18,33);
df=new DefaultListModel();
jlist=new JList(df);
jsp=new JScrollPane(jlist);
jsp.add(jta);
//获得容器
Container con=getContentPane();
//添加组件
con.add(jp1, BorderLayout.NORTH);
con.add(jp2, BorderLayout.CENTER);
con.add(jp3, BorderLayout.SOUTH);
jsp.setPreferredSize(new Dimension(390, 200));
jp1.add(ktv);
jp2.add(jsp, BorderLayout.CENTER);
jp3.add(update);
jp3.add(quit);
//对所用的组件加监听
update.addActionListener(this);
quit.addActionListener(this);
//设置属性
setTitle("修改歌曲");
setIconImage(Toolkit.getDefaultToolkit().createImage("./src/image/KTV8.jpg"));
setLocation(300,100);
pack();
setVisible(true);
if (f.exists()){
list=new Oper().read();
Iterator iter=list.iterator();
df.removeAllElements();
while (iter.hasNext())
df.addElement(iter.next());
}
else
JOptionPane.showMessageDialog(this, "没有内容");
}

public void actionPerformed(ActionEvent e) {
if (e.getSource().equals(quit))
setVisible(false);
if (e.getActionCommand().equals("修改歌曲")){
for (int j=0;j<df.size();j++){
if (jlist.isSelectedIndex(j)){
String li=df.getElementAt(j).toString();
String s[]=li.split("\t");
String id[]=s[0].split(":");
String name[]=s[1].split(":");
String singer[]=s[2].split(":");
String type[]=s[3].split(":");
String sex[]=s[4].split(":");<span style="white-space:pre">			</span>//这块其实没有搞明白：来干什么，书上是：根据“：”将一条数据进行分割，并赋值给不同的字符串
int id1=Integer.parseInt(id[1]);
String name1=name[1];
String singer1=singer[1];
String type1=type[1];
String sex1=sex[1];
new Change(id1,name1,singer1,type1,sex1);
}

}

}
}
}

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class Change extends JFrame implements ActionListener{
JPanel jp1,jp2,jp3,jp4;
JLabel lname,lsinger,ltype,lsex,lid;
JButton jb1,jb2;
JTextField tname,tsinger,ttype,tsex,tid;

public Change(int id1, String name1, String singer1, String type1, String sex1) {
jp1=new JPanel();
jp2=new JPanel();
jp3=new JPanel();
jp4=new JPanel();
lname=new JLabel("歌曲名");
lsinger=new JLabel("歌手姓名");
ltype=new JLabel("类别");
lsex=new JLabel("性别");
lid=new JLabel("id");
tname=new JTextField(18);
tname.setText(name1);
tsinger=new JTextField(18);
tsinger.setText(singer1);
ttype=new JTextField(18);
ttype.setText(type1);
tid=new JTextField(18);
tid.setText(id1+"");
tid.setEditable(false);
tsex=new JTextField(18);
tsex.setText(sex1);
jb1=new JButton("确定");
jb1.addActionListener(this);
jb2=new JButton("取消");
jb2.addActionListener(this);
jp1.setLayout(new GridLayout(5, 1));
jp2.setLayout(new GridLayout(5, 1));
jp1.add(lid);
jp2.add(tid);
jp1.add(lname);
jp2.add(tname);
jp1.add(ltype);
jp2.add(ttype);
jp1.add(lsex);
jp2.add(tsex);
jp1.add(lsinger);
jp2.add(tsinger);
jp3.add(jb1);
jp3.add(jb2);

Container con=getContentPane();
con.add(jp1, BorderLayout.NORTH);
con.add(jb2, BorderLayout.CENTER);
con.add(jp3, BorderLayout.SOUTH);

pack();
setVisible(false);
setLocation(500, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("确定")){
int id=Integer.parseInt(tid.getText());
String name=tname.getText();
String singer=tsinger.getText();
String type=ttype.getText();
String sex=tsex.getText();
new Oper().updata(id, name, singer, type, sex);
setVisible(false);
}
if (e.getActionCommand().equals("取消"))
setVisible(false);

}
}