on tap javax

java

Bài 3:

Class SV{

String hoTen=”Nguyen Thanh Truc”;

Int tuoi=”2”;//sai: giá trị không đặt trong dấu nháy kép

Public abstrac void tong(){

Int x=20,s=0;//sai: tham biến x không thay đổi được

For(i=1;i<x;i++) s+=1;}

Public static void main(String arg){//sai: thiếu dấu [] vì là mảng số

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public static String nhapchuoi(){

DataInputStream dis=new DataInputStream(System.in); String str;

public void in(){

System.out.println("Ho Ten: "+hoTen);

System.out.println("Ma sinh vien: "+masv);

System.out.println("Ngay Sinh: "+ngaySinh);

System.out.println("Dia Chi: "+diaChi);

System.out.println("Diem 1:"+diem1+" Diem 2:"+diem2+" Diem 3:"+diem3); System.out.println("Diem TB: "+DTB);

}

}

/**

*

for(j=1;j<=i;j++){

if("Thai Nguyen".equals(sinhvien[j].diaChi)) { sinhvien[j].in();

}

}

}

}

/*

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x=Integer.parseInt(is.readLine());}catch(IOException e){x=0;}

int A[]=new int[60];

for(y=0;y<x;y++){

System.out.print("nhapphantu A["+y+"]: "); A[y]=Integer.parseInt(is.readLine()); }

System.out.print("\ntongcac so o vi tri chan: "+i);

}

}

Bài 3:

/*

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System.out.print("nhapkichthuoc ma tranvuong: "); m=Integer.parseInt(is.readLine());

int B[][]=new int[40][40];

int C[]=new int [40];

z=0;

for(i=1;i<=m;i++){

k=A[i][i];

int D[]=new int[40];

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* @author le

*/

public class Bai1server {

public final static int port=55;

int tong=0;

for(inti=0;i<9;i++){

tong+=a[i];

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public class bai1client {

public static final int port=55;

// TODO code application logic here

DataInputStream dis=new DataInputStream(System.in);try{

Socket s=new Socket("LocalHost",port);

}

Bài 2:

Server;

/*

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public class bai2server {

public final static int port=50;

/**

* @paramargs the command line arguments

*/

public static void main(String[] args) {

// TODO code application logic here

System.out.print("\nchuoinhanduoc: "+st);

System.out.print("\nchuoiduocchuyendoi: "+str);os.writeUTF(str);

}catch(IOExceptionie){System.out.print(ie);} }

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public class bai2client {

public final static int port=50;

/**

* @paramargs the command line arguments */

public static void main(String[] args) {

// TODO code application logic here

DataInputStream dis=new DataInputStream(System.in);

try{

while(true){

Socket s=new Socket("LocalHost",port);

DataInputStream is=new DataInputStream(s.getInputStream());DataOutputStreamos=new DataOutputStream(s.getOutputStream()); String st,str;

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*/

public class bai3server {

public final static int port=50;

/**

* @paramargs the command line arguments */

public static void main(String[] args) {

// TODO code application logic here String st,str;

try{

ServerSocketss=new ServerSocket(port);while(true){

try{

Socket s=ss.accept();

DataInputStream is=new DataInputStream(s.getInputStream());DataOutputStreamos=new DataOutputStream(s.getOutputStream());st=is.readUTF();

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*

* @author le

*/

public class bai3client {

public final static int port=50;

/**

* @paramargs the command line arguments

*/

public static void main(String[] args) {

// TODO code application logic here

DataInputStream dis=new DataInputStream(System.in);

try{

while(true){

Socket s=new Socket("LocalHost",port);

DataInputStream is=new DataInputStream(s.getInputStream());DataOutputStreamos=new DataOutputStream(s.getOutputStream()); String st,str;

Bìa 19:

Server:

/*

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public class Bai19 {

public final static int port=55;

DataInputStream is=new DataInputStream(s.getInputStream());DataOutputStreamos=new DataOutputStream(s.getOutputStream()); String st;

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*/

packagethuchanh;

public class bai19client {

public final static int port=55;

/**

* @paramargs the command line arguments

*/

public static void main(String[] args) throws IOException {

// TODO code application logic here

DataInputStream dis=new DataInputStream(System.in);

try{

while(true){

Socket s=new Socket("127.0.0.1",port);

DataInputStream is=new DataInputStream(s.getInputStream());DataOutputStreamos=new DataOutputStream(s.getOutputStream());System.out.print("nhap so: ");

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Runtime rt=Runtime.getRuntime();

Process p=rt.exec("logoff");// câulệnh”tắtmáykhỏeđộngmáy, khởiđộngchương trình.exe” }

}