How to create a resizable rectangle in java swing? [duplicate]

This question already has an answer here: How can i create resizable rectangle in java swing? 开发者_StackOverflow (1 answer) Closed 9 years ago.

I'm repeating same question, I need to create a rectangle which is re-sizable, in java swing.

How can i do this?

Any help is appreciated.

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Rectangle r = new Rectangle(0, 0, 100, 200);
r.grow(100, 100); // resize :)