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8247785: Small clarification of the javadoc about builtin class loaders

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Reviewed-by: alanb, rriggs, dholmes
This commit is contained in:
Mandy Chung 2020-06-24 12:21:51 -07:00
parent d85ff3c7f0
commit 4b3c33bac1
1 changed files with 9 additions and 7 deletions
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src/java.base/share/classes/java/lang/ClassLoader.java
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@ -133,11 +133,12 @@ import sun.security.util.SecurityConstants;
* It is the virtual machine's built-in class loader, typically represented * It is the virtual machine's built-in class loader, typically represented
* as {@code null}, and does not have a parent.</li> * as {@code null}, and does not have a parent.</li>
* <li><p>{@linkplain #getPlatformClassLoader() Platform class loader}. * <li><p>{@linkplain #getPlatformClassLoader() Platform class loader}.
* All <em>platform classes</em> are visible to the platform class loader * The platform class loader is responsible for loading the
* that can be used as the parent of a {@code ClassLoader} instance. * <em>platform classes</em>. Platform classes include Java SE platform APIs,
* Platform classes include Java SE platform APIs, their implementation * their implementation classes and JDK-specific run-time classes that are
* classes and JDK-specific run-time classes that are defined by the * defined by the platform class loader or its ancestors.
* platform class loader or its ancestors. * The platform class loader can be used as the parent of a {@code ClassLoader}
* instance.
* <p> To allow for upgrading/overriding of modules defined to the platform * <p> To allow for upgrading/overriding of modules defined to the platform
* class loader, and where upgraded modules read modules defined to class * class loader, and where upgraded modules read modules defined to class
* loaders other than the platform class loader and its ancestors, then * loaders other than the platform class loader and its ancestors, then
@ -151,8 +152,9 @@ import sun.security.util.SecurityConstants;
* from the platform class loader. * from the platform class loader.
* The system class loader is typically used to define classes on the * The system class loader is typically used to define classes on the
* application class path, module path, and JDK-specific tools. * application class path, module path, and JDK-specific tools.
* The platform class loader is a parent or an ancestor of the system class * The platform class loader is the parent or an ancestor of the system class
* loader that all platform classes are visible to it.</li> * loader, so the system class loader can load platform classes by delegating
* to its parent.</li>
* </ul> * </ul>
* *
* <p> Normally, the Java virtual machine loads classes from the local file * <p> Normally, the Java virtual machine loads classes from the local file