How to get extendedState width of JFrame

问题

• 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?

回答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

来源：https://stackoverflow.com/questions/15152297/how-to-get-extendedstate-width-of-jframe