Java实例04

package demo3;

public class Demo2 {

  public static void main(String[] args) {
    // TODO Auto-generated method stub
    int a[][] =new int[3][];
    
    a[0] = new int[] {56,78,90,11,24,35};
    a[1] = new int[] {1,2,3};
    a[2] = new int[] {6,7,8,9};
    
    for(int i=0;i<a.length;i++) {
      System.out.print("a["+i+"]中有"+a[i].length+"个元素，分别是：");
    for(int tmp:a[i]) {
      System.out.print(tmp+ " ");
    }
    System.out.println();
    }
  } 

}