java写入文件

追加的方式写入文件

import java.io.File;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.IOException;

public class AppendFile {
	public static void main(String[] args) {
		appendDataToFile("kafka message....");
	}

	public static void appendDataToFile(String data) {
		try {
			File file = new File("kafka.txt");

			// if file doesnt exists, then create it
			if (!file.exists()) {
				file.createNewFile();
			}

			// true = append file
			FileWriter fileWritter = new FileWriter(file.getName(), true);
			BufferedWriter bufferWritter = new BufferedWriter(fileWritter);			
			bufferWritter.write(data);
			bufferWritter.newLine();//换行
			bufferWritter.close();

			System.out.println("Done");

		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

kafka.txt 存储路径j在当前工程下。

kafka.txt文件内容;
consumerAMessage1
consumerAMessage2
consumerAMessage3
consumerAMessage4
consumerAMessage5
consumerAMessage6
consumerAMessage7
consumerAMessage8
consumerAMessage9
consumerAMessage10