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Java IO InputStreamReader

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Java×Ô¶¨Òå¶àÏ̷߳þÎñÆ÷

// multi.MultiServer.java
package multi;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class MultiServer {
private int port = 8000;
private int backlog = 42;
private ServerSocket server_socket;
private Thread ......

java ½âѹËõzipÎļþ

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 import java.io.*;
import java.util.Enumeration;
//import java.util.zip.*;
import org.apache.tools.zip.*;
public class Test {
//½âѹÎļþ
  public static void extZipFileList(String zipFileName, String extPlace) {
    try {
   ......

JAVA¼¸¸ö³£¼û´íÎó¼òÎö

1£¬¿ÕÖ¸Õë´íÎó java.lang.NullPointerException
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(double,float,boolean,char,int,long)Ò»°ã²»»áÒýÆð¿ÕÖ¸ÕëÒì³£¡£Óɴ˿ɼû£¬¿ÕÖ¸ÕëÒì³£Ö÷Òª¸úÓë¶ÔÏóµÄ²Ù×÷Ïà¹Ø¡£
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Java×÷Òµ02

package homework02;
import java.util.Scanner;
/*
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*/
public class A {
private int m;
private int n;
public A(){
this.intput();
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