A collection of utilities to workaround limitations of Java clone framework
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import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* A collection of utilities to workaround limitations of Java clone framework.
*/
public class CloneUtils {
public static Object clone(final Object obj) throws CloneNotSupportedException {
if (obj == null) {
return null;
}
if (obj instanceof Cloneable) {
Class<?> clazz = obj.getClass ();
Method m;
try {
m = clazz.getMethod("clone", (Class[]) null);
} catch (NoSuchMethodException ex) {
throw new NoSuchMethodError(ex.getMessage());
}
try {
return m.invoke(obj, (Object []) null);
} catch (InvocationTargetException ex) {
Throwable cause = ex.getCause();
if (cause instanceof CloneNotSupportedException) {
throw ((CloneNotSupportedException) cause);
} else {
throw new Error("Unexpected exception", cause);
}
} catch (IllegalAccessException ex) {
throw new IllegalAccessError(ex.getMessage());
}
} else {
throw new CloneNotSupportedException();
}
}
/**
* This class should not be instantiated.
*/
private CloneUtils() {
}
}
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