9. Because today's computers are very fast, you will probably not notice any discernible difference on the screen between the code and JFrame myWindow; myWindow = new JFrame(); myWindow.setVisible(true); JFrame myWindow; myWindow = new JFrame(); myWindow.setVisible(true); myWindow.setVisible(false); myWindow.setVisible(true); One way to see the disappearance and reappearance of the window is to put a delay between the successive setVisible messages. Here's the magic code that puts a delay of 0.5 s: try {Thread.sleep(500);} catch(Exception e) {} The argument we pass to the sleep method specifies the amount of delay in milliseconds [note: 1000 milliseconds (ms) _ 1 second (s)]. We will not explain this magic code.

9. Because today's computers are very fast, you will probably not notice any discernible difference on the screen between the code and JFrame myWindow; myWindow = new JFrame(); myWindow.setVisible(true); JFrame myWindow; myWindow = new JFrame(); myWindow.setVisible(true); myWindow.setVisible(false); myWindow.setVisible(true); One way to see the disappearance and reappearance of the window is to put a delay between the successive setVisible messages. Here's the magic code that puts a delay of 0.5 s: try {Thread.sleep(500);} catch(Exception e) {} The argument we pass to the sleep method specifies the amount of delay in milliseconds [note: 1000 milliseconds (ms) _ 1 second (s)]. We will not explain this magic code.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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