接着使用getfield指令获取this的userDao字段,getfield指令要求一个操作数,操作数的值为常量池中某个CONSTANT_Fieldref_info常量的索引,本例中索引为4的常量表示userDao字段,字段的类型描述符为“Lcom/wujiuye/asmbytecode/book/third/dao/UserDao;”。该指令执行完成后返回this.userDao,存储在操作数栈顶。 我们再...
* Prints a string followed by a newline. The string is converted to an array of bytes using * the encoding chosen during the construction of this stream. The bytes are * then written to the target stream with {@code write(int)}. * * <p>If an I/O error occurs, this stream's err...
将hello world脚本通过ssh方式复制到D1的/root目录下 D:\jean>scp -r ./code/helloworld.java root@192.168.11.27:/root root@192.168.11.27's password: helloworld.java 100% 125 25.2KB/s 00:00 在D1的/root/java/jdk-11.0.10+9/bin目录下,执行hello world脚本,可以成功执行 [root@openEuler-RISCV-ra...
···/*·Your·first·java·code ···*·print·Hello·World·to·console ···*/ ···public·static·void·main(String[]·args)·{ ···//·write·your·code·here ···//·use·System.out.println·to·print·Hello·World·to·console. ···} } 测试数据 运行结果 控制台...
has been displayed on the console screen. This is due to the reason that in the main method of the Hello class, the System.out.println method is the method that writes the string passed to the console output and the string passed to it in the code is “Java Hello World” (see step...
("Courier New");codeRun.setFontSize(12);codeRun.setText("public class HelloWorld {\n public static void main(String[] args) {\n System.out.println(\"Hello, World!\");\n }\n}");// 保存文档try(FileOutputStreamout=newFileOutputStream("code.docx")){document.write(out);}catch(...
Add Code to the Generated Source File Compile the Source File Run the Program Continuing the Tutorial with the NetBeans IDE A Checklist To write your first program, you'll need: The Java SE Development Kit (JDK 7 has been selected in this example) For Microsoft Windows, Solaris OS, and...
You'll notice two open brackets like this one in front of two of the lines of code: { and then further down you see two closing brackets that looks like: } Anything you write inside the inner two brackets belong to the main method, and anything inside of the outer brackets belongs to...
These two items are all you'll need to write your first application.Creating Your First ApplicationYour first application, HelloWorldApp, will simply display the greeting "Hello world!". To create this program, you will: Create a source file A source file contains code, written in the Java ...
defaults write com.microsoft.VSCode ApplePressAndHoldEnabled-boolfalse 然后需要在 setting.json 中把 vim 的配置复制进去即可, 这样就变成了 vim 编辑器, 然后就能进行 vim 的各种骚操作了。setting.json 文件在哪里?command+,进入设置, 然后上面搜索框输入:Run Code Configuration, 在查找的结果中,如果发现 set...