Java Text File Read Line readLines(File file, boolean ignoreComments)

Description

read Lines

License

Apache License

Declaration

public static List<String> readLines(File file, boolean ignoreComments) throws IOException 

Method Source Code

//package com.java2s;
/*/*from www  .  jav a  2  s  .c  o m*/
 * Copyright 2012 Decebal Suiu
 *
 * 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.FileReader;

import java.io.IOException;
import java.util.ArrayList;

import java.util.List;

public class Main {
    public static List<String> readLines(File file, boolean ignoreComments) throws IOException {
        if (!file.exists() || !file.isFile()) {
            return new ArrayList<>();
        }

        List<String> lines = new ArrayList<>();

        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new FileReader(file));
            String line;
            while ((line = reader.readLine()) != null) {
                if (ignoreComments && !line.startsWith("#") && !lines.contains(line)) {
                    lines.add(line);
                }
            }
        } finally {
            if (reader != null) {
                reader.close();
            }
        }

        return lines;
    }
}

Related

1. readLines(File file)
2. readLines(File file)
3. readLines(File file)
4. readLines(File file)
5. readLines(File file)
6. readLines(File file, int maxArraySize)
7. readLines(File file, String charset)
8. readLines(File file, String charsetName)
9. readLines(File file, String encoding)