Synchronized in Vector

[Jun]

I noticed that not all the public methods are synchronized.
Some of them are even "setters" like

public boolean remove(Object o) {
return removeElement(o);
}

public void add(int index, Object element) {
insertElementAt(element, index);
}

while

public synchronized Object remove(int index) {
...
}

is syn.

Why?

thanks

 

[Jon Skeet]

I noticed that not all the public methods are synchronized.
Some of them are even "setters" like

public boolean remove(Object o) {
return removeElement(o);
}

public void add(int index, Object element) {
insertElementAt(element, index);
}

while

public synchronized Object remove(int index) {
..
}

is syn.

Why?

What's the point in a method being synchronized if it does nothing but
call precisely one other method which *is* synchronized?

 

[Tor Iver Wilhelmsen]

public boolean remove(Object o) {
return removeElement(o);
}

public void add(int index, Object element) {
insertElementAt(element, index);
}

These are part of the "retrofitted" List API, and they in turn
delegate to the old, synchronized methods.