package com.santi;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

	static char [] calif;
	static char [] answers = {'a','b','b','c','a','a','d','d','c','b'}; //example1 of right answers
	static char [] answers2 = {'b','b','c','a','a','b','d','b','a','c'};//example2 of right answers
	int result;
	static int cont;
	static String cal=null;
	public static void main(String[] args) {
		int option;
		String opt=getInput("Which test model are you correcting? 1-A; 2-B: ");
		option=Integer.parseInt(opt);
		switch(option){
		case 1:	cont=0;
				cal = checkForTypedLength(cal);
				calif=cal.toCharArray();
				cont = updateCounters(cont, cal);
				System.out.println("Result: "+cont+"/10");
				break;
		case 2:
			cont=0;
			cal = checkForTypedLength(cal);
			calif=cal.toCharArray();
			cont = updateCounters2(cont, cal);
			System.out.println("Result: "+cont+"/10");
			break;
		}

	}
	public static int updateCounters(int cont, String cal) {
		for(int i=0;i<cal.length();i++){
			if(calif[i]==answers[i]){
				cont++;
			}
			else if(calif[i]=='0'){
				
			}
			else if(calif[i]!=answers[i]){
				cont--;
			}
		}
		return cont;
	}
	public static int updateCounters2(int cont, String cal) {
		for(int i=0;i<cal.length();i++){
			if(calif[i]==answers2[i]){
				cont++;
			}
			else if(calif[i]=='0'){
				
			}
			else if(calif[i]!=answers2[i]){
				cont--;
			}
		}
		return cont;
	}
	public static String checkForTypedLength(String cal) {
		boolean go=true;
		while(go==true){
			cal=getInput("Enter answers (i.e.: acbbaabcddc; 0 if unanswered): ");
			if(cal.length()!=10){
				System.out.println("There are only 10 questions in the test!" +
						" Please enter them correctly.");
			}
			else{
				
				go=false;
		}
			
		}
		return cal;
	}
	private static String getInput(String prompt) {
		BufferedReader stdin = new BufferedReader(
				new InputStreamReader(System.in));
		
		System.out.print(prompt);
		System.out.flush();
		
		try {
			return stdin.readLine();
		} catch (Exception e) {
			return "Error: " + e.getMessage();
		}
	}

}

http://programmingeiger824.blogspot.com

A simple way of correcting tests with Java. In this piece of code I just defined two possible models or answers, they're all random, but the only thing needed is to update them with valid answers. The length of the test? I just did it for a 10-question test, but it can naturally be extended to the number of answers the teacher may want.

Test-Type Exam Correction With Java

java

Java