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Java feature/bug

1.

[code language=”java”]
public static void main(String[] args) {
System.out.println(Byte.valueOf((byte) 48) == Byte.valueOf((byte) 48));
System.out.println(Byte.valueOf((byte) 248) == Byte.valueOf((byte) 248));
System.out.println(Integer.valueOf(48) == Integer.valueOf(48));
System.out.println(Integer.valueOf(248) == Integer.valueOf(248));
}
[/code]

Answer

[code language=”java”]
true
true
true
false
[/code]

Continue reading Java feature/bug

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Heap dump, java visualVM

http://www.quizful.net/post/java-memory-leak-visualvm

https://habrahabr.ru/company/luxoft/blog/146988/

https://shipilev.net/blog/archive/visualvm/

https://habrahabr.ru/post/253683/

http://docs.oracle.com/javase/6/docs/technotes/tools/share/jhat.html