Commit bfeda0b

package io;

import java.io.File;

import java.io.FileOutputStream;

import java.io.PrintStream;

import java.util.UUID;

import lombok.AllArgsConstructor;

import org.junit.Test;

public class PrintstreamTest {

@Test

public void compare() throws Exception {

//PrintType printType = PrintType.PRINTLN_APPEND;

PrintType printType = PrintType.PRINTLN_BUILDER_INIT_CAPACITY;

// PrintType printType = PrintType.PRINTF;

int repeat = 10000;

int threadCount = 5;

File targetFile = new File("src/test/resources/io.txt");

if (targetFile.exists()) {

targetFile.delete();

}

PrintStream ps = new PrintStream(new FileOutputStream(targetFile));

String[] messages = new String[repeat];

for (int i = 0; i < repeat; i++) {

messages[i] = UUID.randomUUID().toString() + UUID.randomUUID().toString() + UUID.randomUUID().toString();

}

Task[] tasks = new Task[threadCount];

for (int i = 0; i < threadCount; i++) {

tasks[i] = new Task(messages, ps, printType);

}

long start = System.currentTimeMillis();

for (int i = 0; i < threadCount; i++) {

tasks[i].start();

}

for (int i = 0; i < threadCount; i++) {

tasks[i].join();

}

long elapsed = System.currentTimeMillis() - start;

System.out.printf("## print type : %s >> %d [MS]\n", printType, elapsed);

// Output

// ## print type : PRINTLN_APPEND >> 336 [MS]

// ## print type : PRINTLN_BUILDER >> 378 [MS]

// ## print type : PRINTF >> 459 [MS]

}

@AllArgsConstructor

public static class Task extends Thread {

private String[] message;

private PrintStream ps;

private PrintType printType;

@Override

public void run() {

int repeat = message.length - 1;

for (int i = 0; i < repeat; i++) {

switch (printType) {

case PRINTLN_APPEND:

ps.println(message[i] + message[i + 1]);

break;

case PRINTLN_BUILDER_INIT_CAPACITY:

ps.println(

new StringBuilder(message[i].length() + message[i + 1].length() + 50)

.append(message[i])

.append(message[i + 1])

.toString()

);

break;

case PRINTF:

ps.printf("%s%s\n", message[i], message[i + 1]);

}

}

}

}

private enum PrintType {

PRINTLN_APPEND,

PRINTLN_BUILDER_INIT_CAPACITY,

PRINTF;

}

}

package paths;

import static org.junit.Assert.assertTrue;

import java.io.File;

import java.nio.file.Path;

import java.nio.file.Paths;

import org.junit.Test;

public class WindowPathTest {

@Test

public void testPathsWithSlash() throws Exception {

File configDir = new File("src/test/resources/config");

String absolutePath = configDir.getAbsolutePath();

System.out.println("AbsolutePath :: " + absolutePath);

Path configDirPath = Paths.get(absolutePath);

System.out.println("Path :: " + configDirPath.toString());

assertTrue(configDirPath.toFile().exists());

String configurerPathValue = absolutePath + "/configurer.json";

Path configurerPath = Paths.get(configurerPathValue);

System.out.println("Configurer path :: " + configurerPath);

assertTrue(configurerPath.toFile().exists());

}

}