Notes

package Pl2;
import java.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.*;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JOptionPane;

public class pl2 {



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

File afile =new File("decimal.txt");
File bfile =new File("edited.java");

InputStream inStream = new FileInputStream(afile);
OutputStream outStream = new FileOutputStream(bfile);

PrintWriter pw=new PrintWriter(bfile);
Scanner m = new Scanner(bfile);

try{

byte[] buffer = new byte[1024];

int length;

while ((length = inStream.read(buffer)) > 0){

outStream.write(buffer, 0, length);
}

}catch(IOException e){
e.printStackTrace();
}


//replace system with joption
while (m.hasNext())
{
String line = m.nextLine();
pw.println(line.replaceAll("System.out.print", "JOptionPane.showMessageDialog"));

}

//count number of words
Scanner sc = new Scanner(afile);
{
int count=0;
while(sc.hasNext())
{
sc.next();
count++;
}
System.out.println("Number of words: " + count);

}

//count number of chars
Scanner in = new Scanner(afile);
int chars = 0;
while(in.hasNext()) {
String line = in.nextLine();
chars += line.length();
}
System.out.println("Number of chars: " + chars);

//count number of keywords
int c=0;
Scanner txtscan = new Scanner("keywords.txt");
Scanner ex = new Scanner(afile);
while(txtscan.hasNext())
{
String st = ex.next();
String st1 = txtscan.next();
if(st1.equals(st))
{
c++;
}
}
System.out.println("Number of keywords: " + c);

//count number of spaces
Scanner scan = new Scanner(afile);
Scanner scan1 = new Scanner(afile);
int counter1 = 0;
int counter2= 0;
while (scan.hasNextLine())
{
scan.nextLine();
counter1++;
}
while (scan1.hasNextLine())
{
scan1.next();
counter2++;
}
System.out.println("Number of characters spaces: " + counter1 + "||" + "Number of spaces:" + counter2);

//count number of (for)
String word1 = "for";
int word1Count = 0;
Scanner s = new Scanner(afile);
while (s.hasNext())
{
String line = s.next();
if (line.indexOf("for") != -1)
word1Count++;
}
System.out.println("for count: " + word1Count);

//count number of (if)
String word2 = "for";
int word2Count = 0;
Scanner s1 = new Scanner(afile);
while (s1.hasNext())
{
String line = s1.next();
if (line.indexOf("if") != -1)
word2Count++;
}
System.out.println("if count: " + word2Count);


//count number of (if)
String word3 = "for";
int word3Count = 0;
Scanner s2 = new Scanner(afile);
while (s1.hasNext())
{
String line = s2.next();
if (line.indexOf("while") != -1)
word3Count++;
}
System.out.println("while count: " + word3Count);
System.out.println();



pw.close();
inStream.close();
outStream.close();

}







}