//Example 1//Read file content into string with - Files.lines(Path path, Charset cs)privatestaticStringreadLineByLineJava8(String filePath){StringBuilder contentBuilder=newStringBuilder();try(Stream<String>stream=Files.lines(Paths.get(filePath),StandardCharsets.UTF_8)){stream.forEach(s->contentBu...
During Java application development, we need to read the contents of a file into a string in many situations such as processing configuration files, parsing data, or handling text-based resources. In this Java tutorial, we will explore different ways toread a text file into Stringin Java from ...
Rarely in my career have I written significant amounts of Java, so when Idouse it I’m always learning new things. I thought this unique way to use Scanner to read a text file into a string was great: import java.util.Scanner; String contents = new Scanner(new File(fileName)).useDeli...
TestReadFile.java package com.mkyong.java8; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.stream.Stream; public class TestReadFile { public static void main(String args[]) { String fileName = "c://lines.txt"; //read file into str...
import java.nio.file.Files; import java.nio.file.Paths; import java.util.stream.Stream; void main() throws IOException { var fileName = "src/main/resources/thermopylae.txt"; var path = Paths.get(fileName); try (Stream<String> lines = Files.lines(path)) { ...
packagecom.journaldev.readfileslinebyline;importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassReadFileLineByLineUsingScanner{publicstaticvoidmain(String[]args){try{Scannerscanner=newScanner(newFile("sample.txt"));while(scanner.hasNextLine()){System.out.println(scann...
String currentLine = reader.readLine(); reader.close(); assertEquals(expected_value, currentLine); } Note thatreadLine()will returnnullwhen the end of the file is reached. 5. Reading from a File Using Java NIO In JDK7, the NIO package was significantly updated. ...
1Files.lines(Paths.get("Nio.java"))2.map(String::trim)3.forEach(System.out::println); The above reads the file “Nio.java”, callstrim()on every line, and then prints out the lines. Notice thatSystem.out::printlnrefers to theprintlnmethod on an instance ofPrintStream. ...
Java Code: importjava.io.FileInputStream;importjava.io.FileNotFoundException;importjava.io.IOException;importjava.io.InputStream;// Reading contents from a file into byte array.publicclassExercise10{publicstaticvoidmain(Stringa[]){Stringfile_name="/home/students/test.txt";InputStreamfins=null;try...
Namespace: Java.IO Assembly: Mono.Android.dll Reads in a string from this file. C# 複製 [Android.Runtime.Register("readUTF", "()Ljava/lang/String;", "")] public string? ReadUTF(); Returns String a Unicode string. Implements ReadUTF() Attributes RegisterAttribute Exceptions ...