import java.io.*;
import com.sun.jdi.connect.IllegalConnectorArgumentsException;
import javassist.util.HotSwapper;
public class Test {
public static void main(String[] args) {
HotSwapper hs = null;
try {
hs = new HotSwapper(8000);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalConnectorArgumentsException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new HelloWorld().print();
File newfile = new File("bin
logging
HelloWorld.class");
byte[] bytes = new byte[(int)newfile.length()];
try {
new FileInputStream(newfile).read(bytes);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("** reload a logging version");
HelloWorld hl = new HelloWorld();
String name = hl.getClass().getName();
System.out.println(name);
hs.reload(name , bytes);
new HelloWorld().print();
newfile = new File("HelloWorld.class");
bytes = new byte[(int)newfile.length()];
try {
new FileInputStream(newfile).read(bytes);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("** reload the original version");
hs.reload("HelloWorld", bytes);
new HelloWorld().print();
}
}
et voila ce que sa donne dans eclipse:
Listening for transport dt_socket at address: 8000
hello world
** reload a logging version
HelloWorld
Exception in thread "HotSwap" java.lang.NoClassDefFoundError: class names do not match
at com.sun.tools.jdi.VirtualMachineImpl.redefineClasses(VirtualMachineImpl.java:331)
at javassist.util.HotSwapper.hotswap(HotSwapper.java:250)
at javassist.util.HotSwapper$1.run(HotSwapper.java:224)
Exception in thread "main" java.lang.RuntimeException: failed to reload: HelloWorld
at javassist.util.HotSwapper.reload2(HotSwapper.java:204)
at javassist.util.HotSwapper.reload(HotSwapper.java:160)
at Test.main(Test.java:38)
Sachant que Hello world a le code suivant :
public class HelloWorld {
public void print() {
System.out.println("hello world");
this.x=2;
}
public int x;
}
Pourquoi ces exceptions sont-ils apparus ???
Merci.