小试数组

import javax.swing.JOptionPane;public class Test21 {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubint[][] a={{1,1,1,1},{1,2,2,1},{1,2,2,1},{1,1,1,1}};//初始化数组如4*4printMatrix(a);//按二维方式输出数组int sum=addMatrix(a);System.out.println(sum);}static void printMatrix(int[][] a){String str = "";for(int i=0;i<=3;i++){for(int j = 0;j<=3;j++){str=str+a[i][j]+" ";}}String str1=JOptionPane.showInputDialog(null,str);}static int addMatrix(int[][] a){int sum=0;for(int i=0;i<=3;i++){for(int j= 0;j<=3;j++){sum=sum+a[i][j];}}return sum;}}