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similarity between string and wrapper objects?

vikram choudhary .
Greenhorn

Joined: Apr 25, 2007
Posts: 7
JVM has constant pool of string objects.that's why
"Java"=="Java" always evaluates to true.
is the same case with wrapper objects?
Integer i=3;
Integer j=3;
i==j ?
Keith Lynn
Ranch Hand

Joined: Feb 07, 2005
Posts: 2367
Not for all values.

This is from the Java Language Specification, 5.1.7.

If the value p being boxed is true, false, a byte, a char in the range \u0000 to \u007f, or an int or short number between -128 and 127, then let r1 and r2 be the results of any two boxing conversions of p. It is always the case that r1 == r2.
 
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