Java Language
- Getting started with Java Language
- Top 10 Java Errors with Solutions
- Awesome Book
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- sun.misc.Unsafe
- Getting Instance of Unsafe
- Instantiating sun.misc.Unsafe via bootclasspath
- Instantiating sun.misc.Unsafe via reflection
- Uses of Unsafe
- super keyword
- The Classpath
- The Java Command - 'java' and 'javaw'
- The java.util.Objects Class
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- Using ThreadPoolExecutor in MultiThreaded applications.
- Varargs (Variable Argument)
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- XML Parsing using the JAXP APIs
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- XOM - XML Object Model
Java Language sun.misc.Unsafe Instantiating sun.misc.Unsafe via reflection
Example
public static Unsafe getUnsafe() {
try {
Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
unsafe.setAccessible(true);
return (Unsafe) unsafe.get(null);
} catch (IllegalAccessException e) {
// Handle
} catch (IllegalArgumentException e) {
// Handle
} catch (NoSuchFieldException e) {
// Handle
} catch (SecurityException e) {
// Handle
}
}
sun.misc.Unsafe has a Private constructor, and the static getUnsafe() method is guarded with a check of the classloader to ensure that the code was loaded with the primary classloader. Therefore, one method of loading the instance is to use reflection to get the static field.
