Use this class if you want to sort the text file based on the marks.Ĭlass marksCompare implements int compare(Student s1, Student s2) Step 3 : Similarly, create another Comparator marksCompare. Step 2 : Create Comparator nameCompare. Use this class if you want to sort the text file based on student name.Ĭlass nameCompare implements int compare(Student s1, Student s2) Writer = new BufferedWriter(new FileWriter('C:\output.txt')) Creating BufferedWriter object to write into output file Reading all the lines of input file one by one and adding them into ArrayList

Reader = new BufferedReader(new FileReader('C:\input.txt')) Creating BufferedReader object to read the input file Create an ArrayList object to hold the lines of input file Step 6 : Write every element of ArrayList lines into output text file.

Step 5 : Create BufferedWriter object to write the sorted lines into output text file.īufferedWriter writer = new BufferedWriter(new FileWriter(“Pass the file location here”)) Step 4 : Sort the ArrayList lines using Collections.sort() method. Step 3 : Read all the lines of input text file one by one and add them into ArrayList lines.

Step 2 : Create one ArrayList object which will hold all the lines or records of input text file. Step 1 : Create BufferedReader object to read the input text file.īufferedReader reader = new BufferedReader(new FileReader(“Pass The File Location Here”)) You can apply this method if input file has only one column or you want to sort the lines of a text file. How To Sort A Text File Having Single Column?

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