当我运行我的代码时，出现一个错误，说“线程中的异常”主”java.lang.ArrayIndexOutOfBoundsException：-1”

Question

Here is my code:

    Scanner input= new Scanner (System.in);
    
    int[][] anArray= new int[2][2];
    int[][] anArray1= new int[2][2];
    int[][] anArray2= new int[2][2];
    int temp1=1, temp2=1;
    
    for(int a=0; a<anArray.length; a++){
        for(int b=0; b<anArray.length; b++){
            System.out.println("Enter value in anArray index["+a+"]["+b+"]:");
            anArray[a][b]= input.nextInt();
            
            System.out.println("Enter value in anArray1 index["+a+"]["+b+"]:");
            anArray[a][b]= input.nextInt();
        }
    for(int c=0; c<anArray2.length; c++){
        for(int d=0; d<anArray2.length; d++){
            anArray2[c][d]=anArray[c][d] + anArray1[temp1][temp2];
            System.out.println("Total of "+ anArray[c][d]+ " and "+ anArray1[temp1][temp2]+ " is " + anArray2[c][d]);
        temp2--;
    }
        temp1--;
        temp2=1;
    }
    }

This is a laboratory from my class. And once I simulated it, I don't quite get these parts of the code where it involved temp1 and temp2

    int temp1=1, temp2=1;

    anArray2[c][d]=anArray[c][d] + anArray1[temp1][temp2];

The line of error is here:

    anArray2[c][d]=anArray[c][d] + anArray1[temp1][temp2];

Please helpppp

Answer 1

In this line:

System.out.println("Enter value in anArray1 index["+a+"]["+b+"]:"); anArray[a][b]= input.nextInt();

You typed anArray[a][b] = input.nextInt(); instead of anArray1[a][b] = input.nextInt();