Method overload resolution in java

Question

Here is what I know about overload resolution in java:

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The process of compiler trying to resolve the method call from given overloaded method

Answer 1

Actually in the second example no downcasting is occurred. There occurred the following thing -

1. Integer is unwrapped/unboxed to primitive type int.
2. Then the TestOverLoad(int a) method is called.

In main method you declare Integer like -

 Integer i = 9;  

Then call -

test.TestOverLoad(i);  

Whereas, you have 2 overloaded version of TestOverLoad() -

TestOverLoad(int a); 
TestOverLoad(String a);

Here the second overloaded version of TestOverLoad() takes completely different argument String. Thats why Integer i is unboxed to a primitive type int and after that the first overloaded version is called.