Error opening zip file or JAR manifest missing : c:\jat.ja - jvm

Question

I want to use jvm parameter "-javaagent" to modify Account.class, make it can count execution time,but there have a error inforamtion,i don't know why.
source code：
Account.class
public class Account {
public void operation(){
System.out.println("operations.....");
try{
Thread.sleep(10);
}catch(InterruptedException e){
e.printStackTrace();
}
}
}
TimeStat.class
public class TimeStat {
static ThreadLocal<Long> t=new ThreadLocal<>();
public static void start(){
t.set(System.currentTimeMillis());
}
public static void end(){
long time=System.currentTimeMillis();
System.out.println(Thread.currentThread().getStackTrace()[2]+"speed:");
System.out.println(time);
}
}
Main class
public class RunAccountMain {
public static void main(String[] args){
Account account=new Account();
account.operation();
System.out.println(Account.class.getName());
}
}
I can use some classes to modify Account.class in the follow:
PreMainTraceAgent .class
import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.lang.instrument.Instrumentation;
import java.lang.instrument.UnmodifiableClassException;
import java.security.ProtectionDomain;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
public class PreMainTraceAgent {
public static void premain(String agentArgs,Instrumentation inst)throws ClassNotFoundException,UnmodifiableClassException{
System.out.println("agentArgs:"+agentArgs);
inst.addTransformer(new ClassFileTransformer() {
#Override
public byte[] transform(ClassLoader classLoader, String classname,
Class<?> classbeing, ProtectionDomain protectionDomain,
byte[] classfilebuffer)
throws IllegalClassFormatException {
if(classname.equals("asmtimer.Account")){
System.out.println("meet asmtimer/Account");
ClassReader cr=new ClassReader(classfilebuffer);
ClassWriter cw=new ClassWriter(ClassWriter.COMPUTE_MAXS|
ClassWriter.COMPUTE_FRAMES);
TimeStatClassAdapter adapter=new TimeStatClassAdapter(cw);
cr.accept(adapter, ClassReader.SKIP_DEBUG);
return cw.toByteArray();
}else{
System.out.println(classname);
return classfilebuffer;
}
}
},true);
}
}
TimeStatClassAdapter.class
import org.objectweb.asm.ClassAdapter;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
public class TimeStatClassAdapter extends ClassAdapter {
public TimeStatClassAdapter(ClassVisitor cv){
super(cv);
}
public MethodVisitor visitMethod(final int access,final String name,
final String desc,final String signature,
final String[] exceptions){
MethodVisitor mv=cv.visitMethod(access, name, desc, signature, exceptions);
MethodVisitor wrappedMv=mv;
if(mv!=null){
if(name.equals("operation")){
wrappedMv=new TimeStatMethodAdapter(mv);
}
}
return wrappedMv;
}
}
TimeStatMethodAdapter.class
import org.objectweb.asm.MethodAdapter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class TimeStatMethodAdapter extends MethodAdapter{
public TimeStatMethodAdapter(MethodVisitor ss){
super(ss);
}
#Override
public void visitCode(){
mv.visitMethodInsn(Opcodes.INVOKESTATIC, "asmtimer/TimeStat",
"start", "()V");
super.visitCode();
}
#Override
public void visitInsn(int opcode){
if(opcode>=Opcodes.IRETURN&&opcode<=Opcodes.RETURN){
mv.visitMethodInsn(Opcodes.INVOKESTATIC, "asmtimer/TimeStat",
"end", "()V");
}
mv.visitInsn(opcode);
}[enter image description here][1]
}
MAINFEST.MF
Manfest-Version: 1.0
Premain-Class: asmtimer.PreMainTraceAgent
Can-Redine-Classes: true
Can-Retransform-Classes: true
Console error informattion:
enter image description here
jvm parameter:
enter image description here
Jar file have exsit in "C:\jat.jar", If you have any idle to help me ,please save you words!!!