java关闭流连接IO工具类

package com.demo.utils;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.Reader;import java.io.Writer;/** * 关闭流连接IO工具类 * @author dongyangyang * @Date 2016/12/28 23:12 * @Version 1.0 * */public class IOUtils { public static void close(InputStream in) {  if (in != null) {   try {    in.close();   } catch (IOException e) {   }  } } public static void close(OutputStream out){  if (out != null) {   try {    out.close();   } catch (IOException e) {   }  } } public static void close(Reader r) {  if (r != null) {   try {    r.close();   } catch (IOException e) {   }  } } public static void close(Writer w){  if (w != null) {   try {    w.close();   } catch (IOException e) {   }  } }}