write to files java

writing to a file in java

import java.io.FileWriter;   // Import the FileWriter class
import java.io.IOException;  // Import the IOException class to handle errors

public class WriteToFile {
  public static void main(String[] args) {
    try {
      FileWriter myWriter = new FileWriter("filename.txt");
      myWriter.write("Files in Java might be tricky, but it is fun enough!");
      myWriter.close();
      System.out.println("Successfully wrote to the file.");
    } catch (IOException e) {
      System.out.println("An error occurred.");
      e.printStackTrace();
    }
  }
}

Posted by: Guest on April-22-2020

// example on createNewFile() method of File class in java import java.io.File; import java.io.IOException; public class CreateFileDemo { public static void main(String[] args) throws IOException { try { File file = new File("D:\\demo.txt"); boolean bool = file.createNewFile(); if(bool) { System.out.println("File created successfully"); } else { System.out.println("File already exists"); } } catch(IOException ex) { System.out.println("Exception : "); ex.printStackTrace(); } } }

import java.io.FileWriter; // Import the FileWriter class import java.io.IOException; // Import the IOException class to handle errors public class WriteToFile { public static void main(String[] args) { try { FileWriter fw = new FileWriter("C:/path/to/filename.txt"); fw.write("this is how u write a string"); fw.write(String.valueOf(108)); // cast number to string myWriter.close(); } catch (IOException e) { .. } } }

@Test public void givenUsingJava7_whenWritingToFile_thenCorrect() throws IOException { String str = "Hello"; Path path = Paths.get(fileName); byte[] strToBytes = str.getBytes(); Files.write(path, strToBytes); String read = Files.readAllLines(path).get(0); assertEquals(str, read); }

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