Java FileInputStream Read readFile(File file)

Description

read File

License

Apache License

Declaration

public static String readFile(File file) 

Method Source Code

//package com.java2s;
/**// ww w .  j a  va 2  s .  c  o  m
 * Copyright 2011 Google Inc.
 * <p/>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;

import java.io.IOException;

public class Main {
    public static String readFile(File file) {
        if (!file.exists()) {
            return null;
        }
        ByteArrayOutputStream arrayOutputStream = null;
        try {
            FileInputStream is = new FileInputStream(file);
            byte[] bytes = new byte[1024];

            arrayOutputStream = new ByteArrayOutputStream();
            int count;
            while ((count = is.read(bytes)) != -1) {
                arrayOutputStream.write(bytes, 0, count);
            }
            is.close();
            arrayOutputStream.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();

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

        return new String(arrayOutputStream.toByteArray());

    }
}

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