class Demo3
{
public static void main(String[] args) {
//数组的初始化
int[] a = new int[] {12,13,14,15};
int[] b = {12,13,14,15};
//数组的便利
for(int i = 0;i<4;i++) {
System.out.println(a[i]);
}
for(int i = 0;i<b.length;i++) {
System.out.println(b[i]);
}
}
}