java创建文件，并向文件中写入字符串，读取字符串到屏幕

public class FileTest01 {

	public static void writeFileString() {
		File file = new File("E:\\zkn");
		if(!file.isDirectory())
			file.mkdir();//创建目录
		File fileDir = new File(file,"zkn.txt");
		if(!fileDir.isFile()){
			try {
				fileDir.createNewFile();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		try {
			FileWriter fw = new FileWriter(fileDir);//FileWriter写入文件时不能指定编码格式，编码格式是系统默认的编码格式
			fw.write("11111111\n111111"); //向文件中写入字符串
			fw.flush(); //刷新
			fw.close(); //关闭流
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void readFileString() {
		try {
			FileReader fr = new FileReader("E:\\zkn\\zkn.txt");//字符读入流
			BufferedReader br = new BufferedReader(fr);
			while(br.read() > 0){
				System.out.println(br.readLine());
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		FileTest01.writeFileString();
		FileTest01.readFileString();
	}
}