code-backup/5th_sem_C_Java_VB/Java/File_Handling/q5.java at master · Jimut123/code-backup · GitHub

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/*Write a program to remove all comment lines from any Java source program.

The program should also display number of comment lines removed from a program.*/

import java.io.*;

class q5

{

public static void main(String args[])throws IOException

{

int ch,ch1,ch2,ch3;

long nc,n,i;

String file1,file2;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("\nEnter Input File Name = ");

file1=br.readLine();

System.out.print("Enter Output File Name = ");

file2=br.readLine();

RandomAccessFile fp1 = new RandomAccessFile(file1,"r");

FileOutputStream fp2 = new FileOutputStream(file2);

n=nc=0; //n=size of input file

while((ch=fp1.read())!=-1)

{

n++;

if(ch==34)

{

fp2.write(ch);

ch=fp1.read();

n++;

}while(ch !=34);

fp2.write(ch);

}

else if((char)ch=='/')

{

ch1=fp1.read();

n++;

if((char)ch1=='/')

{

nc++;

{

ch1=fp1.read();

n++;

}while(ch1!=10);

}

else if((char)ch1=='*')

{

/*To skip all

characters within

comment */

nc++;

ch2=fp1.read();

{

ch3=fp1.read();

if((char)ch2=='*' && (char)ch3=='/')

break;

ch2=ch3;

}while(1==1);

}

else

{

fp2.write(ch);

fp2.write(ch1);

}

else

fp2.write(ch);

System.out.println((char)ch);

}

fp1.close();

fp2.close();

System.out.println("\nNumber of Comment lines removed = "+nc);

System.out.println("\n//This is not a comment line");

}

code-backup/5th_sem_C_Java_VB/Java/File_Handling/q5.java at master · Jimut123/code-backup · GitHub

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