Shulou(Shulou.com)06/01 Report--

In this article Xiaobian for you to introduce in detail "how to use Java to create the simplest window", the content is detailed, the steps are clear, the details are handled properly, I hope this "how to use Java to create the simplest window" article can help you solve your doubts, the following follow the editor's ideas slowly in-depth, together to learn new knowledge.

Before you can create a form, you need to import the relevant package package.

Import java.awt.*;import javax.swing.*

Use the new keyword to create a form object

JFrame jf = new JFrame ()

Set the title content of the form through setTitle ().

Jf.setTitle ("MyTitle by W3C")

Use setBounds to set where the form pops up, as well as the width and height of the pop-up. The pop-up position is relative to the upper-left corner of the screen, that is, we regard the upper-left corner of the screen as coordinates (0Power0), x is the horizontal coordinate value, y is the vertical coordinate value.

Jf.setBounds (300,300,800,650)

By default, the form is hidden. If you want the form to display, you need to set setVisible () manually.

Jf.setVisible (true)

Run the code at this point and you can see

But after closing the window, there will be such a problem.

This is because by default, JFrame closes the window and does not close the program, just like the QQ interface we use on computers, as long as it is set up, although the window is closed, it still runs in the background. But to close the window and exit the program, you only need to manually set a command to close the window and exit the program.

Use setDefaultCloseOperation () under JFrame to listen for the operation of Window.

Jf.setDefaultCloseOperation (WindowConstants.EXIT_ON_CLOSE)

Add this and you will find that the window closes and the program closes automatically.

The window can be changed at will by default, such as maximizing, stretching, and so on. But sometimes we don't want the window to move around, just keep the initial state we set ourselves, and just add the setResizable () method manually.

Jf.setResizable (false)

You can see that the window cannot be enlarged or stretched.

After reading this, the article "how to use Java to create the simplest window" has been introduced. If you want to master the knowledge of this article, you still need to practice and use it to understand it. If you want to know more about related articles, please follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.