彦舜原创，CSDN首发：字符流写入工具父类Writer，普通写入子类FileWriter和高效写入流子类BufferedWriter（文末彩蛋）

/*** */
package api.io.writer;import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;/***	这个类用来测试字符写出流Writer工具父类及其子类*/
public class Test1_Writer {/*** */public Test1_Writer() {// TODO Auto-generated constructor stub}/*** 日常小黄线：The value of the local variable field is not used;* 日常小注解：Add @SuppressWarnings 'unused' to main()/method()/field;* 日常小注解：Add @SuppressWarnings 'deprecation' to main()/method()/field;* 日常小注解：Add @SuppressWarnings 'resource' to main()/method()/field;* 日常小注解：Add @SuppressWarnings 'null' to main()/method()/field;* 日常小注解：@SuppressWarnings("resource") == @SuppressWarnings({ "resource" })* 日常小异常：Exception--API(IO)IOException--FileNotFoundException*/public static void main(String[] args) {//普通字符流写出&#x