Does java synchronization work with methods of different names?

Question

class public Test
{
    private int counter;

    public synchronized change()
    {
        counter++;
    }

    public change2()
    {
        synchronized(this){
            counter--;
        }
    }

}

Can we call change and change2 at the same time?

http://stackoverflow.com/a/8213220/2864740 , http://stackoverflow.com/a/442570/2864740 — user2864740, Oct 08 '14 at 01:32

Sotirios Delimanolis · Accepted Answer · 2014-10-08T01:39:24.993

3

Names have nothing to do with it. What is being locked is the object (not the variable, not the reference).

If a thread has started executing a block which synchronizes on an object, any other thread that tries to synchronizes on the same object will block and wait until that original thread completes the execution of its block.

edited Oct 08 '14 at 01:39

answered Oct 08 '14 at 01:28

Sotirios Delimanolis

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by object you mean an instance of Test? – IceKing Oct 08 '14 at 01:31
2

@IceKing In this example, yes. But it can be _any_ instance of _any_ class. (But don't synchronize on instances of `Thread`.) – Sotirios Delimanolis Oct 08 '14 at 01:32

Does java synchronization work with methods of different names?

1 Answers1