Share three examples of Java string writing to files

This article mainly introduces the relevant information on the implementation of the three ways of writing files in JavaString. Friends in need can refer to the following

Java String Writing Three ways to implement files

1. UseFileWriter

String str="hello world!";
    FileWriter writer;
    try {
      writer = new FileWriter("E:/token.txt");
      writer.write(str);
      writer.flush();
      writer.close();
    } catch (IOException e) {
      e.printStackTrace();
    }

2. Use FileOutPutStream

##

File txt=new File("E:/log1.txt");
       if(!txt.exists()){ 
         txt.createNewFile(); 
      } 
       byte bytes[]=new byte[512];  
       bytes=str.getBytes(); 
       int b=bytes.length;  //是字节的长度，不是字符串的长度
       FileOutputStream fos=new FileOutputStream(txt); 
       fos.write(bytes,0,b); 
       fos.write(bytes);
       fos.close();

3. Use FileOutPutStream to append to write files

FileOutputStream fos = new FileOutputStream("E:/log.txt",true);
//true表示在文件末尾追加 
fos.write(log.getBytes()); 
fos.close();

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