Advent-Of-Code-2022/04/src/main.java

 import java.io.IOException;
import java.io.RandomAccessFile;

public class main {

	public static void main(String[] args) {
		
		try {
			RandomAccessFile file = new RandomAccessFile("Input.txt", "r");
			String str;
			
			int indexOfSeperator = 0, indexOfFirstDash = 0, indexOfSecondDash = 0;
			int sectionBeginningElf1, sectionEndingElf1, sectionBeginningElf2, sectionEndingElf2;
			int countPart1 = 0, countPart2 = 0;
      
			while ((str = file.readLine()) != null) {
				indexOfSeperator = str.indexOf(",");
				indexOfFirstDash = str.indexOf("-");
				indexOfSecondDash = str.indexOf("-", indexOfFirstDash+1);
				
				sectionBeginningElf1 = Integer.valueOf(str.substring(0, indexOfFirstDash));
				sectionEndingElf1 = Integer.valueOf(str.substring(indexOfFirstDash+1,indexOfSeperator));
				sectionBeginningElf2 = Integer.valueOf(str.substring(indexOfSeperator+1, indexOfSecondDash));
				sectionEndingElf2 = Integer.valueOf(str.substring(indexOfSecondDash+1));
				
				//  Part 1
				if ((sectionBeginningElf1 <= sectionBeginningElf2 && sectionEndingElf1 >= sectionEndingElf2)
				|| (sectionBeginningElf2 <= sectionBeginningElf1 && sectionEndingElf2 >= sectionEndingElf1)) {
					countPart1++;
				}
				
				// Part 2
				if (between(sectionBeginningElf1, sectionBeginningElf2, sectionEndingElf2) || between(sectionEndingElf1, sectionBeginningElf2, sectionEndingElf2) || between(sectionBeginningElf2, sectionBeginningElf1, sectionEndingElf1) || between(sectionEndingElf2, sectionBeginningElf1, sectionEndingElf1)) {
					countPart2++;
				}
				
				//System.out.println(sectionBeginningElf1 + " " + sectionEndingElf1 + " - " + sectionBeginningElf2 + " " + sectionEndingElf2);
			}
			System.out.println("Part 1: " + countPart1);
			System.out.println("Part 2: " + countPart2);
			file.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static boolean between(int variable, int minValueInclusive, int maxValueInclusive) {
	    return variable >= minValueInclusive && variable <= maxValueInclusive;
	}

}