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public class ArrayCloning {
public static void main(String[] args) {
ArrayCloning ArrayCloning = new ArrayCloning();
Integer[] clonedStaticField = ArrayCloning.clone1();
checkIdentical(clonedStaticField,ArrayCloning.staticField);
Integer[] clonedField = ArrayCloning.clone2();
checkIdentical(clonedField,ArrayCloning.nonStaticField);
Integer[] clown = null;
clown = ArrayCloning.clone3();
clown = ArrayCloning.clone4();
Integer[][] ArrayCloningArrayCloning = ArrayCloning.clone5();
}
public static void checkIdentical(Integer[] one, Integer[] two) {
if (one[0]!=two[0]) throw new RuntimeException("Not the same (a)");
if (one[1]!=two[1]) throw new RuntimeException("Not the same (b)");
}
private static Integer[] staticField = new Integer[2];
private Integer[] nonStaticField = new Integer[2];
public ArrayCloning() {
nonStaticField[0] = new Integer(32);
nonStaticField[1] = new Integer(64);
}
static {
staticField[0] = new Integer(1);
staticField[1] = new Integer(2);
}
public Integer[] clone1() {
System.err.println("Clone call on a static field");
return (Integer[])staticField.clone();
}
public Integer[] clone2() {
System.err.println("Clone call on a non-static field");
return (Integer[])nonStaticField.clone();
}
public Integer[] clone3() {
System.err.println("Clone call on a local variable");
Integer[] ArrayCloningArrayCloning = staticField;
return (Integer[])ArrayCloningArrayCloning.clone();
}
// Clone call on anonymous 'thing' !
public Integer[] clone4() {
System.err.println("Clone call on a 1 dimensional anonymous integer array");
return (Integer[])new Integer[5].clone();
}
// Sick
public Integer[][] clone5() {
System.err.println("Clone call on a 2 dimensional anonymous integer array");
return (Integer[][])new Integer[5][3].clone();
}
}
aspect HelloWorldAspect {
Object[] around(): call(* java.lang.Object.clone()) && within(ArrayCloning) {
Object[] ret = proceed();
return (Object[])ret.clone();
}
}
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