java: ==和equals的区别
public class Main {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int n=3;
int m=3;
System.out.println(n==m);
String str = new String("hello");
String str1 = new String("hello");
String str2 = new String("hello");
System.out.println(str1==str2);
str1 = str;
str2 = str;
System.out.println(str1==str2);
}
}