For example, the method setFont() changes the value of the component's Font property. In turn, this means that you will eventually be able to build user interfaces and, in some cases, entire applications, inside
java java.awt.* Graphics2D scale Introduction Prototype publicabstractvoidscale(doublesx,doublesy); Source Link Document Usage From source file:SwingTimerBasedAnimationScaleRotate.java publicvoidpaint(Graphicsg) {inth = getHeight();intw = getWidth();Graphics2D g2d = (Graphics2D) g;g2d.setRenderi...
这是我们所有代码的基础。 importjavafx.application.Application;// 引入JavaFX的Application类importjavafx.scene.Scene;// 引入Scene类importjavafx.scene.layout.StackPane;// 引入StackPane布局管理器importjavafx.stage.Stage;// 引入Stage类publicclassAwtInJavaFXExampleextendsApplication{@Overridepublicvoidstart(Stageprim...
(c.getWidth(), c.getHeight(),Transparency.BITMASK);/*/*fromwww.java2s.com*/* And now this is how we get an image of the component */Graphics2D g = bImage.createGraphics();// Then use the current component we're in and call paint on this// graphics objectc.paint(g);returnb...
Exceptioninthread"AWT-EventQueue-0"java.lang.NullPointerException: Cannot invoke"java.net.URL.toExternalForm()"because"location"is null at java.desktop/javax.swing.ImageIcon.<init>(ImageIcon.java:234) at jiyik.Example.actionPerformed(Example.java:48) ...
Frame f = new Frame("GridBag Layout Example"); GridBagEx1 ex1 = new GridBagEx1(); ex1.init(); f.add("Center", ex1); f.pack(); f.setSize(f.getPreferredSize()); f.show(); } } 三、以下介绍GridBagLayout的常量字段值用法:
import java.awt.*; public class HelloAWT { public static void main(String[] args) throws InterruptedException { // Frame 默认的布局管理器就是 BorderLayout Frame frame = new Frame("AWT 界面编程"); Panel panel = new Panel(); panel.setLayout(new BoxLayout(frame, BoxLayout.X_AXIS)); ...
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frame=newJFrame("AWT test");frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);frame.setLayout(newBorderLayout());frame.setPreferredSize(newDimension(width,height));canvas=newCanvas();canvas.setSize(width,height);//this part exists only in the third exampleJPanel p=newJPanel();p.setSize...
The Java 1.1 Event ModelThis chapter covers Java's event-driven programming model. Unlike procedural programs, windows-based programs require an event-driven model in which the underlying environment tells your program when something happens. For example, when the user clicks on the mouse, the envi...