字符串动手动脑实践

 
public class StringEquals {

    
/**
     * @param args the command line arguments
     */
    
    public static void main(String[] args) {
        
        String s1=new String("Hello");
        
        String s2=new String("Hello");

        
        System.out.println(s1==s2);
        
        System.out.println(s1.equals(s2));

        
        String s3="Hello";
        
        String s4="Hello";

          
        System.out.println(s3==s4);
        
        System.out.println(s3.equals(s4));
        
    
    }


}