为什么 java 中的 isActive() function 在 windows 中起作用，而在 ubuntu 中不起作用

Question

Why isActive() function run correctly in windows and doesn't run in ubuntu? I used this function in the code below to make the program wait until the myFrame JFrame Window being closed and this worked in windows only.

MyFrame myFrame = new MyFrame();  // This class Extends jFrame to show a Jframe
myFrame.run();
while (myFrame.isActive()) {
    sleep(500);  // this another function in this class to delay the program for 500 mS
}

Why this happen and how to deal with this??

Answer 1

The issue is calling isactive outside event thread. Use event listeners in your myFrame class to handle inactive state.