An UnsupportedOperationException is a subclass of RuntimException in Java and it can be thrown to indicate that the requested operation is not supported. The UnsupportedOperationException class is a member of the Java Collections Framework.
What is ByteBuffer?
A ByteBuffer is a buffer which provides for transferring bytes from a source to a destination. In addition to storage like a buffer array, it also provides abstractions such as current position, limit, capacity, etc. A FileChannel is used for transferring data to and from a file to a ByteBuffer.
How do you handle Java Lang UnsupportedOperationException?
We can solve this problem by using a mutable List that can be modified such as an ArrayList. We create a List using Arrays. asList method as we were using earlier and pass that resultant List to create a new ArrayList object.
When should a method throw an UnsupportedOperationException?
The UnsupportedOperationException is used by a number of built-in Java methods to indicate that the method in question is not currently implemented. This is functionally similar to exceptions found in other languages, such as the . NET NotImplementedException we explored in a previous article.
What is direct buffer memory?
The main feature of DirectByteBuffer is that JVM will try to natively work on allocated memory without any additional buffering so operations performed on it may be faster then those performed on ByteBuffers with arrays lying underneath. We can allocate such ByteBuffer by calling: ByteBuffer directBuffer = ByteBuffer.
What is Java direct?
java jvm. Direct memory was introduced since java 1.4. The new I/O (NIO) classes introduced a new way of performing I/O based on channels and buffers. NIO added support for direct ByteBuffers, which can be passed directly to native memory rather than Java heap.
