扩展 jol 源码包 打印 Mark Word

参考: https://blog.csdn.net/qq_38505969/article/details/123446310

1、下载源码并进行方法扩展

2、pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <modelVersion>4.0.0</modelVersion>       <parent>         <groupId>org.openjdk.jol</groupId>         <artifactId>jol-parent</artifactId>         <version>0.9</version>     </parent>     <!--自定义 jar 包名称-->     <artifactId>jol-core-0.9-summer-extend</artifactId>     <packaging>jar</packaging>       <name>Java Object Layout: Core</name>     <url>http://maven.apache.org</url>       <build>         <plugins>             <plugin>                 <groupId>org.apache.maven.plugins</groupId>                 <artifactId>maven-compiler-plugin</artifactId>                 <configuration>                     <compilerVersion>1.8</compilerVersion>                     <source>1.8</source>                     <target>1.8</target>                 </configuration>             </plugin>         </plugins>     </build>       <properties>         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>     </properties> </project>

3、打包

扩展 toPrintableSimple() 方法代码

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// 扩展方法 public String toPrintableSimple() {     return toPrintableSimple(classData.instance()); }   public String toPrintableSimple(Object instance) {     StringBuffer stringBuffer = new StringBuffer();       if (instance != null) {         VirtualMachine vm = VM.current();         for (long off = 4; off >= 0; off -= 4) {             int word = vm.getInt(instance, off);             stringBuffer.append(toBinary((word >> 24)  & 0xFF) + " " + toBinary((word >> 16)  & 0xFF) + " " + toBinary((word >> 8) & 0xFF) + " " + toBinary((word >> 0) & 0xFF) + " ");         }     }     return stringBuffer.toString(); }

扩展好的 jar 包下载链接：https://pan.baidu.com/s/1cr5R1OxwFU4WEtb3w1zpUw  提取码：i3qm