Answers for "java write to existing file"

6

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();
      }
   }
}
Posted by: Guest on November-30-2020
1

how to add to a file in java

File file = new File("append.txt");
FileWriter fr = new FileWriter(file, true);
BufferedWriter br = new BufferedWriter(fr);
PrintWriter pr = new PrintWriter(br);
pr.println("data");
pr.close();
br.close();
fr.close();
Posted by: Guest on June-18-2020

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