/*
* StudentDelete.java
*
* Created on 2008年10月16日, 下午11:19
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package manage;
import javax.swing.*;
import java.awt.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.io.*;
public class StudentDelete extends JPanel {
JLabel lblInputNo;
JLabel lblNo;
JLabel lblName;
JLabel lblShowNo;
JLabel lblShowName;
JTextField txtInputNo;
JButton btnCheck;
JButton btnDelete;
String no;
String name;
Font font=new Font("Dialog",Font.PLAIN,16);
public StudentDelete(JLabel lblWelcome) {
lblWelcome.setText("学生界面——删除学生信息");
setLayout(null);
lblInputNo=new JLabel("请输入学生学号：");
lblNo=new JLabel();
lblName=new JLabel();
lblShowNo=new JLabel();
lblShowName=new JLabel();
txtInputNo=new JTextField(15);
btnCheck=new JButton("查看信息");
btnDelete=new JButton("确定删除");
lblInputNo.setFont(font);
lblNo.setFont(font);
lblName.setFont(font);
lblShowNo.setFont(font);
lblShowName.setFont(font);
txtInputNo.setFont(font);
btnCheck.setFont(font);
btnDelete.setFont(font);
add(lblInputNo);
add(lblNo);
add(lblName);
add(lblShowNo);
add(lblShowName);
add(txtInputNo);
add(btnCheck);
add(btnDelete);
lblInputNo.setBounds(30,40,150,30);
lblNo.setBounds(30,110,100,30);
lblName.setBounds(30,180,100,30);
lblShowNo.setBounds(140,110,100,30);
lblShowName.setBounds(140,180,100,30);
txtInputNo.setBounds(170,40,150,30);
btnCheck.setBounds(220,110,100,30);
btnDelete.setBounds(220,180,100,30);
btnCheck.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
lblNo.setText("");
lblName.setText("");
lblShowName.setText("");
lblShowNo.setText("");
boolean isFind=false;
if(txtInputNo.getText().equals("")) {
Object[] options = {"确定"};
JOptionPane.showOptionDialog(null, "请输入要删除的学生学号！", "警告",
JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]);
}else if(IsNumber.isNumber(txtInputNo.getText())==false) {
Object[] options = {"确定"};
JOptionPane.showOptionDialog(null, "学生学号必须是数字！", "警告",
JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]);
}else if(isStudentExits()) {
lblNo.setText("学生学号：");
lblName.setText("学生姓名：");
lblShowNo.setText(no);
lblShowName.setText(name);
} else {
lblNo.setText("没有此学生！");
}
}
});
btnDelete.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(txtInputNo.getText().equals("")) {
Object[] options = {"确定"};
JOptionPane.showOptionDialog(null, "请输入要删除的学生学号！", "警告",
JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]);
}else if(IsNumber.isNumber(txtInputNo.getText())==false) {
Object[] options = {"确定"};
JOptionPane.showOptionDialog(null, "学生学号必须是数字！", "警告",
JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]);
}else if(isStudentExits()) {
int choose=JOptionPane.showConfirmDialog(null,"您删除此学生信息吗？","确认",JOptionPane.YES_NO_OPTION);
if (choose==JOptionPane.YES_OPTION) {
try {
File stuData=new File("studentData.txt");
File stuDataTemp=new File("studentDataTemp.txt");
FileReader fr=new FileReader("studentData.txt");
FileWriter fw=new FileWriter("studentDataTemp.txt");
BufferedReader br=new BufferedReader(fr);
BufferedWriter bw=new BufferedWriter(fw);
no=br.readLine();
name=br.readLine();
while(no!=null) {
if(!txtInputNo.getText().equals(no)) {
bw.write(no);
bw.newLine();
bw.write(name);
bw.newLine();
}
no=br.readLine();
name=br.readLine();
}
bw.flush();
br.close();
bw.close();
stuData.delete();
stuDataTemp.renameTo(new File("studentData.txt"));
} catch(IOException e1) {
}
}
if (choose==JOptionPane.NO_OPTION) {
}
} else {
lblNo.setText("没有此学生！");
}
}
});
}
private boolean isStudentExits() {
boolean isFind=false;
try {
FileReader fr=new FileReader("studentData.txt");
BufferedReader br=new BufferedReader(fr);
no=br.readLine();
name=br.readLine();
while(no!=null) {
if(txtInputNo.getText().equals(no)) {
fr.close();
br.close();
return true;
}
no=br.readLine();
name=br.readLine();
}
fr.close();
br.close();
} catch(IOException e1) {
}
return false;
}
}
JavaManage.rar （57个子文件） 
JavaManage test 
build.xml 3KB manifest.mf 85B src manage Teacher.java 3KB IsNumber.java 621B Student.java 3KB StudentDelete.java 7KB TeacherDelete.java 7KB TeacherDisplay.java 2KB StudentAddition.java 4KB WinFrame.java 2KB Welcome.java 548B TeacherAddition.java 4KB Main.java 348B StudentDisplay.java 2KB nbproject build-impl.xml 26KB private private.xml 211B private.properties 157B project.xml 580B genfiles.properties 626B project.properties 2KB build classes manage WinFrame.class 2KB Student$1.class 1KB Teacher$3$1.class 2KB Teacher$1.class 1KB Welcome.class 904B StudentDelete$3.class 3KB WinFrame$2.class 643B TeacherDelete.class 3KB IsNumber.class 601B StudentAddition.class 2KB Student$2$1.class 1KB StudentDisplay.class 2KB Student$3$2.class 2KB TeacherDelete$2.class 3KB TeacherDelete$1.class 2KB StudentDeleteShow.class 1KB StudentAddition$1.class 2KB Student$1$1.class 633B Main.class 452B Teacher.class 2KB Teacher$3.class 1KB TeacherAddition.class 2KB StudentDelete$1.class 2KB Student$2.class 1KB Student.class 2KB Student$3.class 1KB StudentDelete$2.class 3KB Judge.class 258B Student$3$1$1.class 2KB Teacher$3$1$1.class 2KB Student$3$1.class 3KB TeacherDisplay.class 2KB Teacher$1$1.class 2KB TeacherAddition$1.class 2KB WinFrame$1.class 1KB StudentDelete.class 3KB Teacher$2.class 1KB资源评论
