How to get extendedState width of JFrame

Question

• I have a JFrame of which extended state option is set to MAXIMIZE_BOTH

• When i want to get the width of the JFrame it returns 0.

so WHY?

Answer 1

• I have a JFrame of which extended state option is set to MAXIMIZE_BOTH

JFrame.getExtendedState() returns proper state

• When i want to get the width of the JFrame it returns 0.

any coordinated are accesible after

1. pack() is called

2. for already visible container on the screen