fork(2) download

import java.util.Scanner;
public class Main{
    public static void main(String[] args) throws java.lang.Exception {
        Scanner input = new Scanner(System.in);
//        System.out.println("Insert number of cases (between 1 and 10): ");
        int numberOfCases = input.nextInt();
        BigInteger[][] arrayOfNumbers = new BigInteger[numberOfCases][2];
        BigInteger[] result = new BigInteger[numberOfCases];
        String[] lastDigit = new String[numberOfCases];
//        int numberOfCases = 2;
//        BigInteger[][] arrayOfNumbers = {{BigInteger.valueOf(2),BigInteger.valueOf(2)},{BigInteger.valueOf(4),BigInteger.valueOf(4)}};
 
        for (int i = 0; i < arrayOfNumbers.length; i++) {
//            System.out.println("Insert two numbers (between 1 and 1 000 000 000): ");
            for (int j = 0; j < arrayOfNumbers[i].length; j++) {
                arrayOfNumbers[i][j] = input.nextBigInteger();
            }
        }
 
//        System.out.println("Last digits of results");
        for (int i = 0; i < arrayOfNumbers.length; i++) {
            result[i] = BigInteger.valueOf(1);
            BigInteger base = arrayOfNumbers[i][0];
            BigInteger index = arrayOfNumbers[i][1];
            for (BigInteger bi = BigInteger.valueOf(1); bi.compareTo(index) <= 0; bi = bi.add(BigInteger.ONE)) {
                result[i] = result[i].multiply(base);
            }
            lastDigit[i] = String.valueOf(result[i]);
            char charArray[] = lastDigit[i].toCharArray();
            for (int l = 0; l < charArray.length; l++) {
                if (l == ((charArray.length) - 1)) {
                    System.out.println(charArray[l]);
//                    System.out.printf("%d %s \n", result[i], charArray[l]);
                }
            }
        }
    }
}

Main.java:7: error: cannot find symbol
        BigInteger[][] arrayOfNumbers = new BigInteger[numberOfCases][2];
        ^
  symbol:   class BigInteger
  location: class Main
Main.java:7: error: cannot find symbol
        BigInteger[][] arrayOfNumbers = new BigInteger[numberOfCases][2];
                                            ^
  symbol:   class BigInteger
  location: class Main
Main.java:8: error: cannot find symbol
        BigInteger[] result = new BigInteger[numberOfCases];
        ^
  symbol:   class BigInteger
  location: class Main
Main.java:8: error: cannot find symbol
        BigInteger[] result = new BigInteger[numberOfCases];
                                  ^
  symbol:   class BigInteger
  location: class Main
Main.java:22: error: cannot find symbol
            result[i] = BigInteger.valueOf(1);
                        ^
  symbol:   variable BigInteger
  location: class Main
Main.java:23: error: cannot find symbol
            BigInteger base = arrayOfNumbers[i][0];
            ^
  symbol:   class BigInteger
  location: class Main
Main.java:24: error: cannot find symbol
            BigInteger index = arrayOfNumbers[i][1];
            ^
  symbol:   class BigInteger
  location: class Main
Main.java:25: error: cannot find symbol
            for (BigInteger bi = BigInteger.valueOf(1); bi.compareTo(index) <= 0; bi = bi.add(BigInteger.ONE)) {
                 ^
  symbol:   class BigInteger
  location: class Main
Main.java:25: error: cannot find symbol
            for (BigInteger bi = BigInteger.valueOf(1); bi.compareTo(index) <= 0; bi = bi.add(BigInteger.ONE)) {
                                 ^
  symbol:   variable BigInteger
  location: class Main
Main.java:25: error: cannot find symbol
            for (BigInteger bi = BigInteger.valueOf(1); bi.compareTo(index) <= 0; bi = bi.add(BigInteger.ONE)) {
                                                                                              ^
  symbol:   variable BigInteger
  location: class Main
10 errors

Standard output is empty