java实现摄像的japplet程序

以下代码通过测试

import java.awt.BorderLayout;
import java.awt.Component;
import java.util.Vector;

import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Format;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.Player;
import javax.media.format.VideoFormat;
import javax.swing.JApplet;
import javax.swing.JPanel;

public class Camera extends JApplet {

private JPanel jContentPane = null;

public Camera() {
super();
}

public void init() {
this.setSize(320, 240);
this.setContentPane(getJContentPane());
this.setName("Camera");
}

/**
* ハードウエアリストを取得
*/
private CaptureDeviceInfo[] getDevices() {
Vector devices = CaptureDeviceManager.getDeviceList(null);
CaptureDeviceInfo[] info = new CaptureDeviceInfo[devices.size()];
for (int i = 0; i < devices.size(); i++) {
info[i] = (CaptureDeviceInfo) devices.get(i);
}
return info;
}

/**
* ビデオ設備を取得
*/
private CaptureDeviceInfo[] getVideoDevices() {
CaptureDeviceInfo[] info = getDevices();
CaptureDeviceInfo[] videoDevInfo;
Vector<CaptureDeviceInfo> vc = new Vector<CaptureDeviceInfo>();
for (int i = 0; i < info.length; i++) {
Format[] fmt = info[i].getFormats();
for (int j = 0; j < fmt.length; j++) {
if (fmt[j] instanceof VideoFormat) {
vc.add(info[i]);
}
break;
}
}
videoDevInfo = new CaptureDeviceInfo[vc.size()];
for (int i = 0; i < vc.size(); i++) {
videoDevInfo[i] = (CaptureDeviceInfo) vc.get(i);
}

return videoDevInfo;
}

/**
* Cameraを表示
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
BorderLayout borderLayout = new BorderLayout();
jContentPane = new JPanel();
jContentPane.setLayout(borderLayout);

MediaLocator ml = null;
Player player = null;
try {
// １つビデオを取得
ml = getVideoDevices()[0].getLocator();
// Playerを構造
player = Manager.createRealizedPlayer(ml);
player.start();
Component comp = player.getVisualComponent();

if (comp != null) {
// 画面に表示
jContentPane.add(comp, BorderLayout.EAST);
}
} catch (Exception e) {
e.printStackTrace();
}
}
return jContentPane;
}
}