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ReadWrite.java

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package com.zetcode;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileOutputStream;

package com.zetcode;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.nio.file.Files;

import java.nio.file.Paths;

import java.time.Instant;

public class ReadWrite {

public static void main(String[] args) throws IOException {

var content = Files.readString(Paths.get("src/resources/test.txt"));

System.out.println(content);

System.out.println("***********************************");

var lines = Files.readAllLines(Paths.get("src/resources/test.txt"));

System.out.println(lines);

System.out.println("***********************************");

var path = Paths.get("src/resources/test.txt");

try (var br = Files.newBufferedReader(path)) {

String line;

while ((line = br.readLine()) != null) {

System.out.println(line);

}

}

var line1 = "C# is cool";

var line2 = Instant.now().toString();

try (var br = new BufferedWriter(new FileWriter(("src/resources/test2.txt")))) {

br.write(line1);

br.newLine();

br.write(line2);

br.newLine();

}

try (var br = new BufferedReader(new FileReader(("src/resources/test.txt")))) {

String line;

while ((line = br.readLine()) != null) {

System.out.println(line);

}

}

var text = "old falcon";

var data = text.getBytes();

try (var fos = new FileOutputStream("src/resources/test.txt")) {

fos.write(data);

}

try (var fr = new FileWriter("src/resources/test2.txt")) {

fr.write("old falcon");

}

try (var pw = new PrintWriter("src/resources/test.txt")) {

pw.println("Java is cool");

pw.printf("Today is %s%n", Instant.now());

}

}

}