import java.util.Arrays;

public class Main {
  public static void main(String[] argv) throws Exception {
    int[] array = { 1, 2, 3 };
    
    System.arraycopy(array, 0, array, 1, array.length - 1);
    System.out.println(Arrays.toString(array));

    array = new int[]{ 1, 2, 3 };
    System.arraycopy(array, 1, array, 0, array.length - 1);
    System.out.println(Arrays.toString(array));
  }
}

運(yùn)行結(jié)果如下: