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/*
Java 2, v5.0 (Tiger) New Features
by Herbert Schildt
ISBN: 0072258543
Publisher: McGraw-Hill/Osborne, 2004
*/
public class GenMethDemo {
// Determine if an object is in an array.
static <T, V extends T> boolean isIn(T x, V[] y) {
for(int i=0; i < y.length; i++)
if(x.equals(y[i])) return true;
return false;
}
public static void main(String args[]) {
// Use isIn() on Integers.
Integer nums[] = { 1, 2, 3, 4, 5 };
if(isIn(2, nums))
System.out.println("2 is in nums");
if(!isIn(7, nums))
System.out.println("7 is not in nums");
System.out.println();
// Use isIn() on Strings.
String strs[] = { "one", "two", "three",
"four", "five" };
if(isIn("two", strs))
System.out.println("two is in strs");
if(!isIn("seven", strs))
System.out.println("seven is not in strs");
// Opps! Won't compile! Types must be compatible.
// if(isIn("two", nums))
// System.out.println("two is in strs");
}
}
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