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ÔÚ±à³Ì¹ý³ÌÖУ¬ÓÐʱºòÎÒÃÇÐèҪѭ»·±È½Ï×Ö·û´®£¬Í¨³£Ê¹Óõķ½·¨ÊÇequalsÈçÏ£º
public class TestEquals extends Thread {
    public static void main(String args[]) {
        String[] checkStr = {"","aaaa","bbbb","sdf","dsdf"};
        String str="DingDong";
        for(int i=0;i<checkStr.length;i++){
            if(str.equals(checkStr[i])){//±È½Ï×Ö·û´®
                System.out.println("DingDong has in the checkStr list!");
                break;
            }
        }
    }
}
¶øequalsµÄÔ´´úÂëÈçÏ£º
public boolean equals(Object anObject) {
        if (this == anObject) {
            return true;
        }
        if (anObject instanceof String) {
            String anotherString = (String) anObject;
            int n = count;
            if (n == anotherString.count) {
                char v1[] = value;
                char v2[] = anotherString.value;
                int i = offset;
                int j = anotherString.offset;
     


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import java.nio.*;   
import java.nio.channel.*;   
import java.io.*;   
public static void copy(File source, File dest) throws IOException {   
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String str="ÖÐÎÄ";
str=new String(str.getBytes("GB2312"),"8859_1");
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