java flow problems , seeking expert guidance

Requirements : receiving user input , write text files, read text files and displayed.
result of questions asked are:



Why do I format the output and the input is not the same when , how to make the output format and enter the same ?
My output is:


I wrote the program code is as follows:
Seek expert guidance ,

  import java.io.BufferedReader;
  import java.io.BufferedWriter;
  import java.io.File;
  import java.io.FileReader;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.util.Scanner;
  
  public class Test1 {
  	public static void main(String [] args) throws IOException{
  		File f = new File("c:\\MyDoc","test.txt");
  		if(f.exists()){
  			System.out.println("文件已存在。覆盖内容");	
  		}else{
  			System.out.println("文件不存在，创建新文件");
  		}
  		FileWriter fos = new FileWriter(f);
  		BufferedWriter bos = new BufferedWriter(fos);
  		Scanner input = new Scanner(System.in);
  		System.out.println("请输入文本内容，输入end结束输入：");
  		
  		System.out.println("==========================");
  		boolean flag = true;
  		do{
  			String line = input.next();
  			if(line.equals("end")){
  				flag = true;
  			}else{
  				bos.write(line);
  				bos.flush();
  				bos.newLine();
  				flag = false;
  			}
  			
  		}while(!flag);
  		
  		System.out.println("输出文件内容：");
  		System.out.println("==========================");
  		
  		FileReader fr = new FileReader("c:/MyDoc/test.txt");
  		BufferedReader br = new BufferedReader(fr);
  		String line1 ;
  		while((line1 = br.readLine())!= null){
  			System.out.println(line1); 
  		}
  		
  		
  		
  	}
  }
  
  

------ Solution ------------------------------------- -------
String line = input.next ();
changed
String line = input.nextLine (); on the line
------ Solution ------------------- -------------------------
String line = input.nextLine ();