Java 追加写入文件内容

FileWriter 类中有一构造方法是: public FileWriter(File file, boolean append) , append参数如为true则追加写入; false为覆盖写入 ;

String str = "abc";
FileWriter fileWriter;
try {
	fileWriter = new FileWriter("/write.txt", true);
	fileWriter.write(str + "\n");// \n: 换行; 每写入一行追加一个换行
	fileWriter.close();
} catch (IOException e) {
	e.printStackTrace();
}