java Programming Glossary: integer1

Integer wrapper objects share the same instances only within the value 127?

http://stackoverflow.com/questions/5117132/integer-wrapper-objects-share-the-same-instances-only-within-the-value-127

the value 127 Here they are the same instance Integer integer1 127 Integer integer2 127 System.out.println integer1 integer2.. integer1 127 Integer integer2 127 System.out.println integer1 integer2 outputs true But here they are different instances.. outputs true But here they are different instances Integer integer1 128 Integer integer2 128 System.out.println integer1 integer2..

Integer wrapper class and == operator - where is behavior specified?

http://stackoverflow.com/questions/5581913/integer-wrapper-class-and-operator-where-is-behavior-specified

class and operator where is behavior specified Integer integer1 127 Integer integer2 127 System.out.println integer1 integer2.. integer1 127 Integer integer2 127 System.out.println integer1 integer2 true integer1 128 integer2 128 System.out.println integer1.. integer2 127 System.out.println integer1 integer2 true integer1 128 integer2 128 System.out.println integer1 integer2 false..