test2.java

各种关于JAVA的初级编程

public class test2
{
    public static void main(String args[])
    {
        String s1 = "Hello";
        String s2 = "Hello";
        String s3 = new String("Hello");
        
        System.out.println("s1 " + 
            (!s1.equals(s2) ? "not" : "") + "equals s2");
        System.out.println("s1 " + 
            (!s1.equals(s3) ? "not" : "") + "equals s3");
        System.out.println("s1 " + 
            (!(s1 == s2) ? "!=" : "==") + " s2");
        System.out.println("s1 " + 
            (!(s1 == s3) ? "!=" : "==") + " s3");
    }
}