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2009Äê×îºóÒ»²©£º¹ØÓÚ Java ÖжÔÏóµÄ¸´ÖÆ
        Java Öеĸ³Öµ²Ù×÷·ûÓë C++ ÖеIJ»Ò»Ñù¡£ÔÚ C++ ÖУ¬ÕâÌõÓï¾ä£ºbc2 = bc1;½«Ò»¸öÃûΪ bc1 µÄ¶ÔÏóµÄËùÓÐÊý¾Ý¶¼¿½±´µ½ÃûΪ bc2 µÄ¶ÔÏóÖС£Ò²¾ÍÊÇ˵ÕâÌõÓï¾äÖ´Ðк󣬳ÌÐòÖÐÓÐÁ½¸öº¬ÓÐÏàͬÊý¾ÝµÄ¶ÔÏó¡£È»¶øÔÚ Java ÖУ¬ÕâÌõÏàͬµÄ¸³ÖµÓï¾äÖ»Ïò bc2 Öп½±´ÁË bc1 Ö¸ÏòµÄ´æ´¢µØÖ·£¬ÏÖÔÚ bc1 ºÍ bc2 ʵ¼ÊÉÏÖ¸µÄÊÇͬһ¸ö¶ÔÏó£¬ËüÃǶ¼ÊÇÕâ¸ö¶ÔÏóµÄÒýÓá£ÕâÑù´ó´óÌá¸ßÁËÄÚ´æÊ¹ÓÃЧÂÊ£¬Í¬Ê±Ò²ÈÝÒ×ÈÃһЩ¶ÔÄÚ´æÁ˽ⲻÉîµÄÅóÓÑ´øÀ´Ò»Ð©Ê¹ÓÃÉϵĴíÎó¡£±ÈÈç bc1.add(25);buc2.add(20);Ö´ÐÐÖ®ºó bc1 Ôö¼ÓÁË 45¡£¶ø×÷Õß±¾Òâ¿ÉÄÜÊÇÖ»ÊÇÈà bc1 Ôö¼Ó 25£¬bc2 Ôö¼Ó 20 ¶øÒÑ¡£Õâ˵Ã÷ÁË£¬ÔÚ Java ÖУ¬bc2 = bc1; ²¢²»ÊÇÕæÕýÒâÒåÉϵĸ´ÖÆ¡£ÄÇôÔÚ Java ÖÐÈçºÎ½øÐжÔÏó¸´ÖÆÄØ£¿×÷Õß½áºÏ Java Êý¾Ý½á¹¹Ïà¹ØÖªÊ¶£¬×ܽáÁËһЩÏîÄ¿Öеľ­Ñ飬ϣÍû¿ÉÒԺʹó¼Ò¹²Í¬Ì½ÌÖÒ»ÏÂÕâ¸öÎÊÌâ¡£
        ûÓÐʹÓöÔÏó¸´ÖƵĴúÂ룺
        ÒøÐÐÕÊ»§Ô´´úÂë BankAccount.java£º
package clone;
public class BankAccount{
private double balance;
public BankAccount(double ini){
this.balance = ini;
}

public double getBalance() {
return balance;
}
public void setBalance(double balance) {
this.balance = balance;
}
public void add(double give){
this.balance += give;
}

public void redu(double give){
this.balance -= give;
}
}

        ³ÌÐòÈë¿Ú TestClone.java£º
package clone;
public class TestClone {
public static void main(String[] args) {
BankAccount bc1 = new BankAccount(1000.0);
BankAccount bc2 = bc1;
bc1.add(25);
bc2.add(20);
System.out.println("Óû§ 1 µÄÕÊ»§Óà¶îΪ£º" + bc1.getBalance());
System.out.println("Óû§ 2 µÄÕÊ»§Óà¶îΪ£º" + bc2.getBalance());
}
}

        Ö´ÐÐ TestClone.java£¬´òÓ¡½á¹ûÈçÏ£º
Óû§ 1 µÄÕÊ»§Óà¶îΪ£º1045.0
Óû§ 2 µÄÕÊ»§Óà¶îΪ£º1045.0
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import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
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