write file java

1import java.io.FileWriter;   // Import the FileWriter class
2import java.io.IOException;  // Import the IOException class to handle errors
3
4public class WriteToFile {
5  public static void main(String[] args) {
6    try {
7      FileWriter myWriter = new FileWriter("filename.txt");
8      myWriter.write("Files in Java might be tricky, but it is fun enough!");
9      myWriter.close();
10      System.out.println("Successfully wrote to the file.");
11    } catch (IOException e) {
12      System.out.println("An error occurred.");
13      e.printStackTrace();
14    }
15  }
16}

1import java.io.FileWriter;   // Import the FileWriter class
2import java.io.IOException;  // Import the IOException class to handle errors
3
4public class WriteToFile {
5  public static void main(String[] args) {
6    try {
7      FileWriter fw = new FileWriter("C:/path/to/filename.txt");
8      fw.write("this is how u write a string");
9	  fw.write(String.valueOf(108)); // cast number to string
10      myWriter.close();
11    } catch (IOException e) {
12        ..
13    }
14  }
15}
16

1PrintWriter writer = new PrintWriter("the-file-name.txt", "UTF-8");
2writer.println("The first line");
3writer.println("The second line");
4writer.close();
5

1@Test
2public void givenUsingJava7_whenWritingToFile_thenCorrect() 
3  throws IOException {
4    String str = "Hello";
5 
6    Path path = Paths.get(fileName);
7    byte[] strToBytes = str.getBytes();
8 
9    Files.write(path, strToBytes);
10 
11    String read = Files.readAllLines(path).get(0);
12    assertEquals(str, read);
13}
14