Share three examples of methods for appending file content in Java

This article mainly introduces the example codes of three methods of appending file content in Java. It has certain reference value. Interested friends can refer to it.

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import Java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileOutputStream; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.OutputStreamWriter; 
import java.io.RandomAccessFile; 
 
/** 
 * 
 * @author malik 
 * @version 2011-3-10 下午10:49:41 
 */ 
public class AppendFile { 
   
  public static void method1(String file, String conent) {   
    BufferedWriter out = null;   
    try {   
      out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, true)));   
      out.write(conent);   
    } catch (Exception e) {   
      e.printStackTrace();   
    } finally {   
      try {   
        if(out != null){ 
          out.close();   
        } 
      } catch (IOException e) {   
        e.printStackTrace();   
      }   
    }   
  }   
  
  /**  
   * 追加文件：使用FileWriter  
   *  
   * @param fileName  
   * @param content  
   */  
  public static void method2(String fileName, String content) {  
    FileWriter writer = null; 
    try {   
      // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件   
      writer = new FileWriter(fileName, true);   
      writer.write(content);    
    } catch (IOException e) {   
      e.printStackTrace();   
    } finally {   
      try {   
        if(writer != null){ 
          writer.close();   
        } 
      } catch (IOException e) {   
        e.printStackTrace();   
      }   
    }  
  }   
  
  /**  
   * 追加文件：使用RandomAccessFile  
   *  
   * @param fileName 文件名  
   * @param content 追加的内容  
   */  
  public static void method3(String fileName, String content) {  
    RandomAccessFile randomFile = null; 
    try {   
      // 打开一个随机访问文件流，按读写方式   
      randomFile = new RandomAccessFile(fileName, "rw");   
      // 文件长度，字节数   
      long fileLength = randomFile.length();   
      // 将写文件指针移到文件尾。   
      randomFile.seek(fileLength);   
      randomFile.writeBytes(content);   
    } catch (IOException e) {   
      e.printStackTrace();   
    } finally{ 
      if(randomFile != null){ 
        try { 
          randomFile.close(); 
        } catch (IOException e) { 
          e.printStackTrace(); 
        } 
      } 
    } 
  }  
 
  public static void main(String[] args) { 
    try{ 
      File file = new File("d://text.txt"); 
      if(file.createNewFile()){ 
        System.out.println("Create file successed"); 
      } 
      method1("d://text.txt", "123"); 
      method2("d://text.txt", "123"); 
      method3("d://text.txt", "123"); 
    }catch(Exception e){ 
      System.out.println(e); 
    } 
  } 
}

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