数组的2种初始化方式

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>

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>