java-code-example/ClassLoader/JarLoader.java at master · cherkavi/java-code-example · GitHub

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import java.io.*;

import java.net.*;

import java.util.jar.*;

public class JarLoader {

public static void main(String[] args) throws FileNotFoundException, IOException {

String jarName = "c:/temp/temp.jar"; // çàìåíèòü íà ñâîé

URLClassLoader urlLoader = getURLClassLoader(new URL("file", null, jarName));

JarInputStream jis = new JarInputStream(new FileInputStream(jarName));

JarEntry entry = jis.getNextJarEntry();

int loadedCount = 0, totalCount = 0;

while (entry != null) {

String name = entry.getName();

if (name.endsWith(".class")) {

totalCount++;

name = name.substring(0, name.length() - 6);

name = name.replace('/', '.');

System.out.print("> " + name);

try {

urlLoader.loadClass(name);

System.out.println("\t- loaded");

loadedCount++;

} catch (Throwable e) {

System.out.println("\t- not loaded");

System.out.println("\t " + e.getClass().getName() + ": " + e.getMessage());

}

entry = jis.getNextJarEntry();

}

System.out.println("\n---------------------");

System.out.println("Summary:");

System.out.println("\tLoaded:\t" + loadedCount);

System.out.println("\tFailed:\t" + (totalCount - loadedCount));

System.out.println("\tTotal:\t" + totalCount);

}

private static URLClassLoader getURLClassLoader(URL jarURL) {

return new URLClassLoader(new URL[]{jarURL});

}

java-code-example/ClassLoader/JarLoader.java at master · cherkavi/java-code-example · GitHub

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