==和equals()
String s1 = new String("hello");
String s2 = new String("hello");
System.out.println(s1 == s2);// false
System.out.println(s1.equals(s2));// true
String s3 = new String("hello");
String s4 = "hello";
System.out.println(s3 == s4);// false
System.out.println(s3.equals(s4));// true
String s5 = "hello";
String s6 = "hello";
System.out.println(s5 == s6);// true
System.out.println(s5.equals(s6));// true |
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