public class AgeDemo { public static void main(String[] args) { int[] age = {0, 3, 2, 23}; System.out.println(age[2]); System.out.println(age.length); for(int x = 0; x < age.length; x++) { System.out.println(age[x]); } } } D:\subline\lesson011>java AgeDemo 2 4 0 3 2 23 D:\subline\lesson011>
第二種java
public class AgeDemo { public static void main(String[] args) { int[] age = new int[4]; System.out.println(age[2]); System.out.println(age.length); for(int x = 0; x < age.length; x++) { System.out.println(age[x]); } } } D:\subline\lesson011>java AgeDemo 0 4 0 0 0 0 D:\subline\lesson011>