打印数组格式

public class Shuzu {

public static void main(String arg[]) {
printArray(new int[] { 1, 2, 3 });
}

public static void printArray(int[] arr) {
System.out.print("[");
for (int i = 0; i < arr.length; i++) {
if (i == arr.length - 1) {
System.out.println(arr[i] + "]");
} else {
System.out.print(arr[i] + ", ");
}
}
}
}