Java中的输出流

1、输出流的三种方式

1）按字符输出，覆盖原来的内容

2）按字节输出，覆盖原来的内容

3）不覆盖原来的内容

package output;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;

public class OutPutTest {

	public static void main(String[] args) {
		File file = new File("C:\\Users\\Administrator\\Desktop\\zzz.txt");
//		 characterWriter(file, "ABC");
//		byteWriter(file, "ABC");
		 characterWriter2(file, "123");
	}

	/*
	 * 1、按字符输出，输出的内容直接覆盖以前的文本
	 */
	public static void characterWriter(File file, String count) {
		BufferedWriter bufferedWriter = null;
		try {
			bufferedWriter = new BufferedWriter(new PrintWriter(file));
			bufferedWriter.write(count);
			bufferedWriter.flush();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (bufferedWriter != null) {
				try {
					bufferedWriter.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	/*
	 * 2、按字节输出，覆盖原来内容
	 */
	public static void byteWriter(File file, String count) {
		OutputStream outputStream = null;
		try {
			outputStream = new FileOutputStream(file);
			outputStream.write(count.getBytes());
			outputStream.flush();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (outputStream != null) {
				try {
					outputStream.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	/*
	 * 3、输出的内容不覆盖以前的内容
	 */
	public static void characterWriter2(File file, String count) {
		BufferedWriter bufferedWriter = null;
		try {
			bufferedWriter = new BufferedWriter(new FileWriter(file, true));
			bufferedWriter.write(count);
			bufferedWriter.flush();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (bufferedWriter != null) {
				try {
					bufferedWriter.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}