for(int j=0;j

if(findstring[j].indexOf(jt1.getText())!=-1){ findpersion=j;

break; } }

System.out.println(number); //number=5

if(findpersion!=-1){

sfind=findstring[ findpersion].toString();

sstr=sfind.split(\ jt2.setText(sstr[0]); jt3.setText(sstr[1]); jt4.setText(sstr[2]); jt5.setText(sstr[3]); jt6.setText(sstr[4]); jt7.setText(sstr[5]); } else{

JOptionPane.showMessageDialog(null, \查无此学生\提示\

JOptionPane.INFORMATION_MESSAGE); } } } );

jb2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) {

if(!jt1.getText().trim().equals(\

System.out.println(\ filefindd(); }

else{

JOptionPane.showMessageDialog(null,\请输入需要查询学生的学号\

\温馨提示\ } }

public void filefindd() { byte a1[]=new byte[1000]; int i;

int findpersion=-1;

String s2 =new String();

s2=jt2.getText()+\\

\\

String str = null; try{

FileInputStream fis=new FileInputStream(\ i=fis.read(a1,0,1000); try{

str=new String(a1,0,i); }

catch(Exception ee){

System.out.println(\编码没有被发现\ }

fis.close(); }

catch(FileNotFoundException e){

System.out.println(\ }

catch(IOException e){ e.printStackTrace(); }

System.out.println(s2);

String[] findstring=new String[number]; String string ;

findstring=str.split(\ int no = 0;

for(int j=0;j

if(findstring[j].indexOf(jt1.getText())!=-1){

findstring[j]= s2;

no=j; } }

string =findstring[0];

for(int j=1;j

string =string+\ }

System.out.println(\

System.out.println(number); string=string+\

a1=string.getBytes(); try{

FileOutputStream fos=new FileOutputStream(\ fos.write(a1);

JOptionPane.showMessageDialog(null, \信息修改成功\

\提示\ fos.close(); }

catch(IOException e1){ e1.printStackTrace(); } } });

jt1=new JTextField(30); jt2=new JTextField(30); jt3=new JTextField(30); jt4=new JTextField(30); jt5=new JTextField(30); jt6=new JTextField(30); jt7=new JTextField(30);

jl1=new JLabel(\输入要改的学生学号\

jl2=new JLabel(\修改学生信息\

jl2.setFont(new Font(\ jl3=new JLabel(\查询结果&请修改\ jl4=new JLabel(\学号\ jl5=new JLabel(\姓名\ jl6=new JLabel(\性别\ jl7=new JLabel(\专业\ jl8=new JLabel(\班级\

jl9=new JLabel(\身份证号\

jl2.setBounds( 200,20,300,30 ); jt1.setBounds( 250,80,80,25 ); jt2.setBounds( 10, 160,80,25 ); jt3.setBounds( 100,160,80,25 ); jt4.setBounds( 195,160,40,25 ); jt5.setBounds( 245,160,125,25 ); jt6.setBounds( 380,160,80,25 ); jt7.setBounds( 470,160,130,25 ); jb1.setBounds( 380,80,80,25 ); jb2.setBounds( 250, 300,80,60 ); jl1.setBounds( 100,80,160,25 ); jl3.setBounds( 240,120,200,25 ); jl4.setBounds( 40,200,80,25 ); jl5.setBounds( 120,200,80,25 ); jl6.setBounds( 200,200,80,25 ); jl7.setBounds( 280,200,80,25 ); jl8.setBounds( 400,200,80,25 ); jl9.setBounds( 495,200,80,25 );

j3.add(jb1); j3.add(jb2); j3.add(jt1); j3.add(jt2); j3.add(jt3); j3.add(jt4); j3.add(jt5); j3.add(jt6); j3.add(jt7); j3.add(jl1); j3.add(jl2); j3.add(jl3); j3.add(jl4);

j3.add(jl5); j3.add(jl6); j3.add(jl7); j3.add(jl8); j3.add(jl9);

// j3.add(jb2);

this.add(j1); this.add(j2); this.add(j3); this.add(j4);

this.setVisible(true); this.setSize(700,450);

j1.setBackground(Color.RED); j1.setBounds(0, 0, 80, 450);

j2.setBackground(Color.blue); j2.setBounds(80, 0, 620, 450);

j3.setBackground(Color.green); j3.setBounds(80, 0, 620, 450); j3.setVisible(false);

j4.setBackground(Color.cyan); j4.setBounds(80, 0, 620, 450); j4.setVisible(false);

b1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) { j2.setVisible(true); } });

b2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) { j2.setVisible(false);