java - Max MSP-OutOfMemoryError 的 Java 类

Question

我正在尝试通过 mxj（max 和 java 之间的桥梁）在我的 max 补丁中使用以下 java。它旨在从 IP 地址下载 jpeg 流并渲染到矩阵。但是，我不断收到一长串错误，通常以 OutOfMemoryError 结尾，此时我的整个笔记本电脑都会死机。问题似乎是创建的字符串太多而没有及时删除。我与 Max 一起工作，但几乎没有 Java 经验。任何想法都非常感谢！

import com.cycling74.max.*;
import com.cycling74.jitter.*;
import java.awt.image.*;
import javax.imageio.*;
import java.net.*;

// created by bbn on Feb 18, 2005
/**
 * downloads an image from the web and outputs it as a matrix
 *
 * @author bbn
 */
public class v001imagedownloader extends MaxObject 
{

String imgURL="http://www.example.com";

JitterMatrix matrixFromUrlImage = new JitterMatrix(4, "char", 640,480);

public void bang()
{
    outlet(0, "jit_matrix", matrixFromUrlImage.getName());
}


public void downloadImage()
{
        getImage(imgURL);
}

public void getImage(final String someUrl)
{       
    (new Thread() {

        //public String url;


        public void run() {
            try {
                URL u = new URL(someUrl);
                BufferedImage bi = ImageIO.read(u);
                JitterMatrix tempMatrix = new JitterMatrix(bi);

                 matrixFromUrlImage = new JitterMatrix(bi);                 

                // copy the temp matrix to the our matrix


                outlet(0, "jit_matrix", matrixFromUrlImage.getName());
            } catch (Exception e) {
                e.printStackTrace();
            }
        } 
    }).start();
}

public void setURL(String Url)
{
    imgURL=Url;
}

public void notifyDeleted()
{
    //getImage.release();
    matrixFromUrlImage.freePeer();
}

}

at v001imagedownloader$1.run(v001imagedownloader.java:41)
Caused by: java.net.ConnectException: Operation timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:382)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:241)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:228)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:431)
at java.net.Socket.connect(Socket.java:527)
at java.net.Socket.connect(Socket.java:476)
at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:424)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:538)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:214)
at sun.net.www.http.HttpClient.New(HttpClient.java:300)
at sun.net.www.http.HttpClient.New(HttpClient.java:319)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:987)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:923)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:841)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1195)
at java.net.URL.openStream(URL.java:1010)
at javax.imageio.ImageIO.read(ImageIO.java:1367)
... 1 more
javax.imageio.IIOException: Can't get input stream from URL!
at javax.imageio.ImageIO.read(ImageIO.java:1369)
at v001imagedownloader$1.run(v001imagedownloader.java:41)
Caused by: java.net.ConnectException: Operation timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:382)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:241)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:228)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:431)
at java.net.Socket.connect(Socket.java:527)
at java.net.Socket.connect(Socket.java:476)
at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:424)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:538)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:214)
at sun.net.www.http.HttpClient.New(HttpClient.java:300)
at sun.net.www.http.HttpClient.New(HttpClient.java:319)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:987)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:923)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:841)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1195)
at java.net.URL.openStream(URL.java:1010)
at javax.imageio.ImageIO.read(ImageIO.java:1367)
... 1 more
javax.imageio.IIOException: Can't get input stream from URL!
at javax.imageio.ImageIO.read(ImageIO.java:1369)
at v001imagedownloader$1.run(v001imagedownloader.java:41)
Caused by: java.net.ConnectException: Operation timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:382)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:241)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:228)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:431)
at java.net.Socket.connect(Socket.java:527)
at java.net.Socket.connect(Socket.java:476)
at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:424)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:538)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:214)
at sun.net.www.http.HttpClient.New(HttpClient.java:300)
at sun.net.www.http.HttpClient.New(HttpClient.java:319)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:987)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:923)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:841)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1195)
at java.net.URL.openStream(URL.java:1010)
at javax.imageio.ImageIO.read(ImageIO.java:1367)