数组边界检查

/*来自 
 N o w J a v a . c o m - 时  代  Java*/

public class Main {

  public static void main(String[] args) {

    int[] test = new int[3];

      

    System.out.println("Assigning 12 to the first element");

    test[0] = 12;  // index 0 is between 0 and 2. Ok


    System.out.println("Assigning 9 to the fourth element");

    

    // index 3 is not between 0 and 2. At runtime, an exception is thrown.

    test[3] = 9; 

    
    /**
    来 自 n o w j a v a . c o m
    **/

    System.out.println("We will not get here");    

  }

}