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java使用BufferedOutputStream写文件

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下面代码演示如何使用BufferedOutputStream类写文件。

使用BufferedOutputStream类写文件,需要先将字符串转换为字节数组,然后再写入。

import java.io.BufferedOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 *
 * @author outofmemory.cn
 */
public class Main {

    /**
     * Prints some data to a file
     */
    public void writeToFile(String filename) {

        BufferedOutputStream bufferedOutput = null;

        try {

            //Construct the BufferedOutputStream object
            bufferedOutput = new BufferedOutputStream(new FileOutputStream(filename));

            //Start writing to the output stream
            bufferedOutput.write("Line one".getBytes());
            bufferedOutput.write("\n".getBytes()); //new line, you might want to use \r\n if you're on Windows
            bufferedOutput.write("Line two".getBytes());
            bufferedOutput.write("\n".getBytes());

            //prints the character that has the decimal value of 65
            bufferedOutput.write(65);

        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        } finally {
            //Close the BufferedOutputStream
            try {
                if (bufferedOutput != null) {
                    bufferedOutput.flush();
                    bufferedOutput.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Main().writeToFile("myFile.txt");
    }
}

运行上述代码,文件中的内容为:

Line one
Line two
A

标签:java,IO,BufferedOutputStream,文件

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