如何将字符串写入文件？

package constxiong.interview;

import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 测试写入字符串到文件
 * @author ConstXiong
 * @date 2019-11-08 12:05:49
 */
public class TestWriteStringToFile {

    public static void main(String[] args) {
        String cx = "ConstXiong";
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream("E:/a.txt");
            fos.write(cx.getBytes());//注意字符串编码
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fos != null) {
                try {
                    fos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    
}