网站建设与网页设计制作,深圳网站建设首选上榜网络,提高手机性能的黑科技软件,教育培训机构平台try-with-resources 是 Java 7 引入的一个语言特性#xff0c;用于简化资源管理的代码#xff0c;特别是在处理需要关闭的资源#xff08;如文件、网络连接、数据库连接等#xff09;时。try-with-resources 允许您在 try 语句中声明需要关闭的资源#xff0c;这些资源会在… try-with-resources 是 Java 7 引入的一个语言特性用于简化资源管理的代码特别是在处理需要关闭的资源如文件、网络连接、数据库连接等时。try-with-resources 允许您在 try 语句中声明需要关闭的资源这些资源会在 try 块执行完毕后自动关闭无需显式调用关闭方法或者使用 finally 块。 Uijt!jt!uif!ebub!up!cf!fodszqufe/ package net.Java;import java.io.*;public class EncryptionFilterOutputStreamExample {public static void main(String[] args) {String data This is the data to be encrypted.;byte[] bytes data.getBytes();//以下内容隐性关闭输出流即没有 finally下使用close;try (FileOutputStream fileOutputStream new FileOutputStream(encrypted_data.txt);FilterOutputStream filterOutputStream new EncryptionFilterOutputStream(fileOutputStream)) {filterOutputStream.write(bytes);} catch (IOException e) {e.printStackTrace();}//以下内容显性关闭输出流即 finally下使用close;OutputStream out System.out;FilterOutputStream filterOutputStream new EncryptionFilterOutputStream(out);try {filterOutputStream.write(bytes);} catch (IOException e) {e.printStackTrace();}finally {try {filterOutputStream.close();} catch (IOException e) {throw new RuntimeException(e);}}}
}class EncryptionFilterOutputStream extends FilterOutputStream {public EncryptionFilterOutputStream(OutputStream out) {super(out);}Overridepublic void write(int b) throws IOException {// Simple encryption: Add 1 to the byte value before writingout.write(b 1);}
}
