1 import org.objectweb.asm.Opcodes;
2 import org.objectweb.asm.ClassWriter;
3 import org.objectweb.asm.MethodVisitor;
6 import java.util.HashMap;
7 import java.lang.ClassLoader;
9 public class ClassLoaderTest {
10 private void loadMagic() {
11 ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
12 cw.visit(Opcodes.V1_4, Opcodes.ACC_PUBLIC, "sun/reflect/GroovyMagic", null, "sun/reflect/MagicAccessorImpl", null);
13 MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
15 mv.visitVarInsn(ALOAD, 0);
16 mv.visitMethodInsn(INVOKESPECIAL, "sun/reflect/MagicAccessorImpl", "<init>", "()V", false);
22 define(cw.toByteArray(), "sun.reflect.GroovyMagic");
25 protected void define(byte[] bytes, final String name) {
26 //knownClasses.put(name, defineClass(name, bytes, 0, bytes.length));
27 Class cls = defineClass(name, bytes, 0, bytes.length);
30 protected final Map<String,Class> knownClasses = new HashMap<String,Class>();
32 public static void main(String[] args) {
35 ClassLoader cl = new ClassLoader();
36 Class cls = defineClass(name, bytes, 0, bytes.length);