通过程序命令查找类文件

import java.io.File;   
import java.util.ArrayList;   
import java.util.Enumeration;   
import java.util.List;   
import java.util.zip.ZipEntry;   
import java.util.zip.ZipFile;   

public class FindInJar {   
    public String className;   

    public ArrayList jarFiles = new ArrayList();   

    public FindInJar() {   
    }   

    public FindInJar(String className) {   
        this.className = className;   
    }   

    public void setClassName(String className) {   
        this.className = className;   
    }   

    public List findClass(String dir, boolean recurse) {   
        searchDir(dir, recurse);   
        return this.jarFiles;   
    }   

    protected void searchDir(String dir, boolean recurse) {   
        try {   
            File d = new File(dir);   
            if (!d.isDirectory()) {   
                return;   
            }   
            File[] files = d.listFiles();   
            for (int i = 0; i < files.length; i++) {   
                if (recurse && files[i].isDirectory()) {   
                    searchDir(files[i].getAbsolutePath(), true);   
                } else {   
                    String filename = files[i].getAbsolutePath();   
                    if (filename.endsWith(".jar")||filename.endsWith(".zip")) {   
                        ZipFile zip = new ZipFile(filename);   
                        Enumeration entries = zip.entries();   
                        while (entries.hasMoreElements()) {   
                            ZipEntry entry = (ZipEntry) entries.nextElement();   
                            String thisClassName = getClassName(entry);   
                            if (thisClassName.equals(this.className) || thisClassName.equals(this.className + ".class")) {   
                                this.jarFiles.add(filename);   
                            }   
                        }   
                    }   
                }   
            }   
        } catch (Exception e) {   
            e.printStackTrace();   
        }   
    }   

    public List getFilenames() {   
        return this.jarFiles;   
    }   

    protected String getClassName(ZipEntry entry) {   
        StringBuffer className = new StringBuffer(entry.getName().replace('/', '.'));   
        return className.toString();   
    }   

    public static void main(String args[]) {   
        FindInJar findInJar = new FindInJar("com.xxx.xxx.XX");// Class Name  
        List jarFiles = findInJar.findClass("E:/xxxx/lib", true);// Path   
        if (jarFiles.size() == 0) {   
            System.out.println("Not Found");   
        } else {   
            for (int i = 0; i < jarFiles.size(); i++) {   
                System.out.println(jarFiles.get(i));   
            }   
        }   
    }   
}