Intermediate Java (18) - Implementing a Generic Method

import java.util.*;

public class apples{

public static void main(String[] args){

Integer[] iray = {1,2,3,4};

Character[] cray = {'b','u','c','y'};

printMe(iray);

printMe(cray);

}

//generic method

public static <T> void printMe(T[] x){

for(T b: x)

System.out.printf("%s ", b);

System.out.println();

}

}

Generic method是可以利用generic data(<T>),當調用該函數時，無論參數是那一個類型，它都能自動調用.

這是運行時的結果:  

1 2 3 4

b u c y