how do i enter a file with java code example

Example 1: open file java

import java.io.*;

public class openFile {

    public static void main(String[] args) {
        try{
            File file = new File("C:\\file.txt");
        }catch(Exception e){
            e.printStackTrace();
        }
    }
    
}

Example 2: Write an application that reads the content of the current directory and prints it to the screen. java

package com.vogella.java.files;

import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;

public class Main {
  public static void main(String[] args) throws IOException {
    String input = FilesUtil.readTextFile("file.txt");
    System.out.println(input);
    FilesUtil.writeToTextFile("copy.txt", input);

    System.out.println(FilesUtil.readTextFile("copy.txt"));

    FilesUtil.readTextFileByLines("file.txt");
    Path path = Paths.get("file.txt");
  }
}