Java InputStreamReader Read readFile(File file)

Description

read File

License

Apache License

Declaration

public static String readFile(File file) 

Method Source Code

//package com.java2s;
/*/*from ww  w  . j  a va2s. com*/
 * Copyright 2017 By_syk
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.BufferedReader;
import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStreamReader;

public class Main {
    public static String readFile(File file) {
        if (file == null) {
            return null;
        }

        StringBuilder sbData = new StringBuilder();
        BufferedReader bufferedReader = null;
        try {
            bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
            String buffer;
            while ((buffer = bufferedReader.readLine()) != null) {
                sbData.append(buffer).append("\n");
            }
            if (sbData.length() > 0) {
                sbData.setLength(sbData.length() - 1);
            }

            return sbData.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return null;
    }
}

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