Question

1 Design and implement FileCompare program that compares two text input files (file1.txt and file2.txt), line-by-line, for equality. Print any lines that are not equivalent indicating the line numbers in both files. The language of implementation is java

2 . Create a program that reads a string input from the user, then determines and prints how many of each lowercase vowels (a, e. i, o, and u) appear in the entire string. Have a separate counter for each vowel. Also count and print the number of non-vowel characters.

Answer 1

/*
 *  Java Program for comparing two files
 */


import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
 
public class Main
{   
  public static void main(String[] args) throws IOException
  {
    String fileName1 = "file1.txt";
    String fileName2 = "file2.txt";

    BufferedReader reader1 = new BufferedReader(new FileReader(fileName1));
    BufferedReader reader2 = new BufferedReader(new FileReader(fileName2));
      
    String line1 = reader1.readLine();
    String line2 = reader2.readLine();
    
    boolean areEqual = true;
    int lineNum = 1;
      
    while (line1 != null || line2 != null)
    {
      if(line1 == null || line2 == null)
      {
        areEqual = false;
        break;
      }
      else if(! line1.equalsIgnoreCase(line2))
      {
        areEqual = false;
        break;
      }
      line1 = reader1.readLine();
      line2 = reader2.readLine();
      lineNum++;
    }

    //  ignoring end of file line
    lineNum--;
  
    if(areEqual)
    {
      System.out.println("The number of lines: " + lineNum);
      System.out.println("Two files have the same content.");
    }
    else
    {
      System.out.println("Two files have different content. They differ at line " + lineNum);
    }

    reader1.close();
    reader2.close();
  }
}

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