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laxman
java question
2 Answer(s)      3 years and 9 months ago
Posted in : Java Interview Questions


How to find the longest and shortest line from the file in case of java and java program should read the filename from the keyboard?


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April 2, 2011 at 11:06 AM


import java.io.*;
import java.util.*;

class FindLongestLineFromFile{
    public static void main(String[] args)throws Exception{
        Scanner input=new Scanner(new File("C:/hello.txt"));
        String maxLine="";
        int maxLength = -1;
        while(input.hasNextLine()){ 
                String currentLine = input.nextLine(); 
                if(currentLine.length() > maxLength) { 
                        maxLength = currentLine.length(); 
                        maxLine = currentLine; 
                }
        }
        System.out.println("Longest Line is: "+maxLine);
    }
}


April 2, 2011 at 12:15 PM


import java.io.*;
import java.util.*;

class FindLongestAndShortestLineFromFile{
    public static void main(String[] args)throws Exception{
        System.out.println("Enter File Name: ");
        Scanner input=new Scanner(new File("C:/hello.txt"));
        String maxLine="";
        int maxLength = -1;
        int minLength=Integer.MAX_VALUE;
        String minLine="";
        while(input.hasNextLine()){ 
                String currentLine = input.nextLine(); 
                if(currentLine.length() > maxLength){ 
                        maxLength = currentLine.length(); 
                        maxLine = currentLine; 
                }   
                if(currentLine.length() <minLength) { 
                        minLength = currentLine.length(); 
                        minLine = currentLine; 
                }   
        }
        System.out.println("Longest Line is: "+maxLine);
        System.out.println("Shortest Line is: "+minLine);
    }
}


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