Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;

import java.io.Writer;

public class Main {
    private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;

    private void copy(InputStream inputStream, File output) throws IOException {
        OutputStream outputStream = null;
        try {
            if (!output.exists()) {
                output.createNewFile();
            }
            outputStream = new FileOutputStream(output);
            int read = 0;
            byte[] bytes = new byte[1024];
            if (inputStream != null) {
                while ((read = inputStream.read(bytes)) != -1) {
                    outputStream.write(bytes, 0, read);
                }
            }
        } finally {
            try {
                if (inputStream != null) {
                    inputStream.close();
                }
            } finally {
                if (outputStream != null) {
                    outputStream.close();
                }
            }
        }
    }

    public void copy(InputStream input, Writer output, String encoding) throws IOException {
        if (encoding == null) {
            copy(input, output);
        } else {
            InputStreamReader in = new InputStreamReader(input, encoding);
            copy(in, output);
        }
    }

    public void copy(InputStream input, Writer output) throws IOException {
        InputStreamReader in = new InputStreamReader(input);
        copy(in, output);
    }

    public static int copy(Reader input, Writer output) throws IOException {
        long count = copyLarge(input, output);
        if (count > Integer.MAX_VALUE) {
            return -1;
        }
        return (int) count;
    }

    public static long copyLarge(Reader input, Writer output) throws IOException {
        char[] buffer = new char[DEFAULT_BUFFER_SIZE];
        long count = 0;
        int n = 0;
        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, n);
            count += n;
        }
        return count;
    }
}