如何写入文件?(How to write to a file?)

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小牛编辑
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2023-12-01

问题描述 (Problem Description)

如何写入文件?

解决方案 (Solution)

此示例显示如何使用BufferedWriter的write方法写入文件。

import java.io.*;
public class Main {
   public static void main(String[] args) {
      try {
         BufferedWriter out = new BufferedWriter(new FileWriter("outfilename"));
         out.write("aString");
         out.close();
         System.out.println("File created successfully");
      }
      catch (IOException e) {
      }
   }
}

结果 (Result)

上面的代码示例将产生以下结果。

File created successfully.

以下是在java中写入文件的另一个例子

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
public class FileExample {
   public static void main(String[] args) {
      try {
         String content = "xnip is one the best site in the world";
         File file = new File("C:\\Users\\xnip7\\Desktop\\abc.txt");
         if (!file.exists()) {
            file.createNewFile();
         } 
         FileWriter fw = new FileWriter(file.getAbsoluteFile());
         BufferedWriter bw = new BufferedWriter(fw);
         bw.write(content);
         bw.close();
         System.out.println("Done");
      } catch (IOException e) {
         e.printStackTrace();
      } 
   } 
}

上面的代码示例将产生以下结果。

Done