com.lambdista.example.ReadFileLines Maven / Gradle / Ivy
/**
* Copyright 2014 Alessandro Lacava
*
* 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.
*/
package com.lambdista.example;
import com.lambdista.util.Try;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Arrays;
import java.util.List;
/**
* File lines read example
*
* @author Alessandro Lacava
* @since 2014-06-25.
*/
public class ReadFileLines {
public static void main(String[] args) {
List lines = readFileWithoutTry("test.txt");
System.out.println("File read using the try-catch block");
lines.forEach(System.out::println);
lines = readFileWithTry("test.txt");
System.out.println("File read using the Try-Success-Failure API");
lines.forEach(System.out::println);
}
public static List readFileWithoutTry(String file) {
List lines;
try {
lines = Files.readAllLines(new File(file).toPath());
} catch (IOException e) {
lines = Arrays.asList("Could not read the file: " + file);
}
return lines;
}
public static List readFileWithTry(String file) {
return Try.apply(() -> Files.readAllLines(new File(file).toPath()))
.getOrElse(Arrays.asList("Could not read the file: " + file));
}
}