CreateFile.java
 

import java.io.File; 
import java.io.IOException;

public class CreateFile {  
  public static void main(String[] args) {  
    try {  
      File myObj = new File("filename.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();  
    }  
  }  
} 

Result:
File created: filename.txt