4.用JAVA中的多線程示例生產者和消費者問題
package com.softeem.demo;
class Producer implements Runnable {
private SyncStack stack;
public Producer(SyncStack stack) {
this.stack = stack;
}
public void run() {
for (int i = 0; i < stack.getProducts().length; i++) {
String product = "產品" + i;
stack.push(product);
System.out.println("生產了: " + product);
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
class Consumer implements Runnable {
private SyncStack stack;
public Consumer(SyncStack stack) {
this.stack = stack;
}
public void run() {
for (int i = 0; i < stack.getProducts().length; i++) {
String product = stack.pop();
System.out.println("消費了: " + product);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
class SyncStack {
private String[] products = new String[10];
private int index;
public synchronized void push(String product) {
if (index == product.length()) {
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
notify();
products[index] = product;
index++;
}
public synchronized String pop() {
if (index == 0) {
try {
wait();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
notify();
index--;
String product = products[index];
return product;
}
public String[] getProducts() {
return products;
}
}
public class TestProducerConsumer {
public static void main(String[] args) {
SyncStack stack = new SyncStack();
Producer p = new Producer(stack);
Consumer c = new Consumer(stack);
new Thread(p).start();
new Thread(c).start();
}
}
5.編程實現序列化的Student（sno,sname）對象在網絡上的傳輸
package com.softeem.demo;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.net.ServerSocket;
import java.net.Socket;
class Student implements Serializable {
private int sno;
private String sname;
public Student(int sno, String sname) {
this.sno = sno;
this.sname = sname;
}
public int getSno() {
return sno;
}
public void setSno(int sno) {
this.sno = sno;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
@Override
public String toString() {
return "學號:" + sno + ";姓名:" + sname;
}
}
class MyClient extends Thread {
@Override
public void run() {
try {
Socket s = new Socket("localhost", 9999);
ObjectInputStream ois = new ObjectInputStream(s.getInputStream());
Student stu = (Student) ois.readObject();
String msg = "客戶端程序收到服務器端程序傳輸過來的學生對象>> " + stu;
System.out.println(msg);
ois.close();
s.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
class MyServer extends Thread {
@Override
public void run() {
try {
ServerSocket ss = new ServerSocket(9999);
Socket s = ss.accept();
ObjectOutputStream ops = new ObjectOutputStream(s.getOutputStream());
Student stu = new Student(1, "趙本山");
ops.writeObject(stu);
ops.close();
s.close();
ss.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public class TestTransfer {
public static void main(String[] args) {
new MyServer().start();
new MyClient().start();
}
}