java create a new file code example

Example 1: Java create new file

// 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();
      }
   }
}

Example 2: java create txt file

File myObj = new File("path");
myObj.createNewFile();
FileWriter myWriter = new FileWriter("path");
myWriter.write("text");
myWriter.close();

Example 3: write file java

@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);
}

Example 4: creating file in java

package FileHandling;
 
 // Import the File class
import java.io.File;
 
// Import the IOException class to handle errors
import java.io.IOException; 
 
public class CreateFile {
public static void main(String[] args) {
try {
// Creating an object of a file
File myObj = new File("D:FileHandlingNewFilef1.txt"); 
if (myObj.createNewFile()) {
System.out.println("File created: " + myObj.getName());
} else {
System.out.println("File already exists.");
}
} catch (IOException e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
}