"JAVA" Error collection

2015,10,26

With if (ss[1]== "xxx") No

Use if (ss[1].equals ("xxx")) to perform the correct

Reason:

For basic types such as int = = Comparison is a value

Comparison of reference type = = with string s is an object address, not a value

The Equals method is the first version of the object class that compares two objects to the address

But string overrides the Equals method, which compares the values of two strings

But there are still problems:

In the java8 all I know should be true has become false, such as S = = "Hello" This kind of do not know why

"JAVA" Error collection