Name: vi73552 Date: 03/23/99


The Java source code for java.lang.reflect.Method contains this
method:

    /*
     * Avoid clone()
     */
    static Class[] copy(Class[] in) {
int l = in.length;
if (l == 0)
return in;
Class[] out = new Class[l];
for (int i = 0; i < l; i++)
out[i] = in[i];
return out;
    }

This method appears to be rather inefficient in the way that it
copies elements from one array to the other. A better implementation
would be to use System.arraycopy.

    static Class[] copy(Class[] in) {
int l = in.length;
if (l == 0)
return in;
Class[] out = new Class[l];
System.arraycopy(in, 0, out, 0, l);
return out;
    }

I don't see why you'd want to avoid the use of clone(). The above
method would likely be slightly faster if it were written:

    static Class[] copy(Class[] in) {
int l = in.length;
if (l == 0)
return in;
return (Class[])in.clone();
    }
(Review ID: 55955)
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