就想弄个啥的

摘要： public static void main(String[] args) throws Exception { Writer fw = new FileWriter(new File("data.txt")); fw.write('c'); } } 运行后data.txt一篇空白。运行速度太快使 阅读全文

摘要： //代码正确但是怎么一直报错 package come.itwu.d4_字符流; import java.io.Writer; public class FileWriter { public static void main(String[] args) throws Exception { Wr 阅读全文