Can you have unimplemented java methods in your class body(similar to python pass)?

Question

I'm writing a class and I find it helpful to have functions I have yet to implement in the class I'm working in, so if I'm making a stack for ints I could write something like:

public class Stack { ... private void push(int n) {} private int pop() {} ... }

just as a reminder of functionality I'm supporting and organizational purposes. Is this somehow possible? I keep getting compile time errors when I try.

The functionality I'm looking for is similar to python's pass statement like:

def f(): pass

Not if you have a return type other than void. You could have just tried it. — Sotirios Delimanolis
– Sotirios Delimanolis, Commented Feb 13, 2014 at 4:36
See this answer: stackoverflow.com/a/5607373/426028 Define your own NotImplementedException class and throw it from within your not-implemented methods. — agentnega
– agentnega, Commented Feb 13, 2014 at 4:41
Alternatively, comment out the line. Most IDE's make commenting easy; simply put your cursor in or highlight the line(s) you want to comment and press ctrl / to toggle comments. — Justin
– Justin, Commented Feb 13, 2014 at 4:42

Brian Roach · Accepted Answer · 2014-02-13 04:48:42Z

1

The conventional way, which the Netbeans IDE will do automatically when implementing an interface or extending an abstract class to provide placeholders, is to do:

private void push(int n) { throw new UnsupportedOperationException("not implemented yet"); }

edited Feb 13, 2014 at 4:48

answered Feb 13, 2014 at 4:43

Brian Roach

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2 Comments

Miserable Variable Over a year ago

+1 Eclipse uses default template of some variation of return null; which I think is a bad thing and usually replace my template by throwing UnsupportedOperationException

Brian Roach Over a year ago

Yeah, I haven't used eclipse for ages. I'll edit a specify netbeans since this is exactly what it does

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