java中二维数组的赋值与遍历

//创建多维数组
int [][] IntAy=new int[3][3];
for (int i = 0; i < IntAy.length; i++) {     
            for (int j = 0; j < IntAy[i].length; j++) {  
            IntAy[i][j]=i+j;
            }
        }
for (int i = 0; i < IntAy.length; i++) {     
            for (int j = 0; j < IntAy[i].length; j++) {  
            System.out.println(IntAy[i][j]);
            }
        }
//增强for循环

char a[][] = new char[3][4];
for (char[] cs : a) {
for (char c : cs) {
c = '*';
System.out.print(c);
}
System.out.println();
}