Java 带输入和 output 的二维数组

Question

I'm trying to saving array with input some String type and to print it. But cannot understand why there is a error came up.. please advise me for any reasons.. Much appreciate in advance..

static String Create(){ 
    
     Scanner sc = new Scanner(System.in);
     int num;
     String rn,am,rt;
     System.out.print("Enter Quantity:");
     num = sc.nextInt();
     String[][] result1= new String[num][2];

        
        for(int i=0;i<num;i++) {
            System.out.printf("Enter Details [%d](Room Number , Type , Rate)with blank : \n", (i+1));
            rn = sc.next();
            rt = sc.next();
            am = sc.next();
            for(int j=0;j<3;j++) {
                result1[i][0] = rn;
                result1[i][1] = rt;
                result1[i][2] = am;
            }
        }
        
        System.out.println();
        System.out.println("---------------------------------");
        System.out.printf("Total: %d\n", num);
        System.out.println("---------------------------------");
        System.out.println("Room Number\tRoom Type\tRate");
        for(int f=0;f<num;f++){
            for(int t=0;t<3;t++) {
                System.out.println(result1);
            }
        }
        return result1;
}

}

Answer 1

j from below loop is not used, not sure what is the point of this loop:

 for(int j=0;j<3;j++) {

At the end you try to display entire array instead of its elements.

It should be (with condition on t changed from 3 to 2:

for(int f=0;f<num;f++){
            for(int t=0;t<2;t++) {
                System.out.println(result1[f][t]);
            }
        }

You also return an array at the end while the method is defined to return a string. This might be the error you are getting.