二维数组

 

 

 

 

 

 

package array;

public class ArrayDemo05 {
    public static void main(String[] args) {
        //[4][2]
        /*
        1,2 array[0]
        2,3 array[1]
        3,4 array[2]
        4,5 array[3]
        5,6 array[4]
        6,7 array[5]
         */
        int[][] array = {{1,2},{2,3},{3,4},{4,5},{5,6},{6,7}};
        for (int i = 0; i < array.length; i++) {
            for (int j = 0; j < array[i].length; j++) {
                System.out.print(array[i][j]);
            }
        }

        System.out.println(array[0][0]);
        System.out.println(array[0][1]);
        System.out.println(array[1][0]);
        System.out.println(array[1][1]);
        System.out.println(array[2][0]);
        System.out.println(array[3][1]);
        
        System.out.println(array.length);//6
        System.out.println(array[0].length);//2

    }
}