Assert

[solomon_13000]

Can anyone explain to me in simple English language why we can't use assertion for:

1) Argument checking in public methods.

public class Test{
    public void abc(int a){
         assert a>3
    } 
}

2) Command line arguments.

public class Test{
    public static void main(String[] args)
         assert args.length==3
    } 
}

Your help is kindly appreciated.

Thank You.

[new_programmer]

public class Test{
    public static void main(String[] args)
    {
         assert args.length==3;
    } 
}

@solomon
Your code is perfectly right, problem is that you have to enable assertion
by either
java -ea Test arguments
Or
java -enableassertion Test arguments

Hope you cleared.

[solomon_13000]

The answer is:

1) Assert doesn't throw an appropriate exception (i.e. IllegalArgumentException).
2) If assert is disabled then the argument isn't tested.

Does anyone disagree with the answer above?