.JAVA.POLICY的设置

本文介绍了一个使用Java Swing组件显示图片的简单示例。通过JApplet展示如何加载并显示本地图片文件,并添加文本标签。该示例适用于初学者了解Swing的基本用法。

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.JAVA.POLICY
如果在同一目录下就不要
如果图片放在同一目录下,或子目录下就不必要.JAVA.POLICY
放在别处就必要.JAVA.POLICY
必须用绝对目录。

import javax.swing.*;
import java.awt.*;
public class disp extends JApplet
{
 JPanel paneobject = new JPanel();
 JLabel labelimage;
 JLabel label1;
 public void init()
 {
  getContentPane().add(paneobject);
  Icon image = new ImageIcon("d://123//123.gif");
  labelimage = new JLabel(image);
  label1=new JLabel("fdjs");
  paneobject.add(label1);
  paneobject.add(labelimage);
 }
}
//<applet code="disp.class" width=500 height=500></applet> 

at android.widget.LinearLayout.measureVertical(LinearLayout.java:883) at android.widget.LinearLayout.onMeasure(LinearLayout.java:726) at android.view.View.measure(View.java:29007) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7132) at com.android.internal.policy.DecorView.measureChildWithMargins(DecorView.java:3010) at android.widget.FrameLayout.onMeasure(FrameLayout.java:205) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:911) at android.view.View.measure(View.java:29007) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:5801) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:3999) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:4393) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:3667) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:12113) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:2459) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:2468) at android.view.Choreographer.doCallbacks(Choreographer.java:1693) at android.view.Choreographer.doFrame(Choreographer.java:1448) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:2284) at android.os.Handler.handleCallback(Handler.java:1014) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loopOnce(Looper.java:250) at android.os.Looper.loop(Looper.java:340) at android.app.ActivityThread.main(ActivityThread.java:9913) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:621) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:957)
最新发布
06-13
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