JVM:类加载器
Java JVM About 956 words说明
基于Java11
。
系统类加载器
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
System.out.println(systemClassLoader);
输出:AppClassLoader
jdk.internal.loader.ClassLoaders$AppClassLoader@2437c6dc
平台类加载器
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
ClassLoader platformClassLoader = systemClassLoader.getParent();
System.out.println(platformClassLoader);
输出:PlatformClassLoader
jdk.internal.loader.ClassLoaders$PlatformClassLoader@3f3afe78
启动类加载器
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
ClassLoader platformClassLoader = systemClassLoader.getParent();
ClassLoader bootstrapClassLoader = platformClassLoader.getParent();
System.out.println(bootstrapClassLoader);
输出:null
null
自定义类使用的加载器
System.out.println(ClassLoaderDemo.class.getClassLoader());
输出:AppClassLoader
jdk.internal.loader.ClassLoaders$AppClassLoader@2437c6dc
String 类使用的加载器
System.out.println(String.class.getClassLoader());
输出:null
null
Views: 1,247 · Posted: 2022-05-21
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