Count char in a file with InputStream - Java File Path IO

Java examples for File Path IO:File Stream

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Description

Count char in a file with InputStream

Demo Code

import java.io.*;

public class Count {
    public static void countChars(InputStream in) throws IOException {
        int count = 0;

        while (in.read() != -1)
            count++;//from  ww w .  ja va  2  s . co m

        System.out.println("Counted " + count + " chars.");
    }

    public static void main(String[] args) throws Exception {
        if (args.length >= 1)
            countChars(new FileInputStream(args[0]));
        else
            System.err.println("Usage: Count filename");
    }
}

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