Questions

What is JNI used for?

by Author

What is JNI used for?

JNI is the Java Native Interface. It defines a way for the bytecode that Android compiles from managed code (written in the Java or Kotlin programming languages) to interact with native code (written in C/C++). To learn more, see Kotlin and Android.

Which of the following are appropriate reasons why you might want to define a native method in Java?

native keyword in Java

  • To improve the performance of the system.
  • To achieve machine level/memory level communication.
  • To use already existing legacy non-java code.

What is the use of native method in Java?

Native methods are Java™ methods that start in a language other than Java. Native methods can access system-specific functions and APIs that are not available directly in Java. The use of native methods limits the portability of an application, because it involves system-specific code.

What are native libraries Java?

“Native Library” generally means a non-Java library that’s used by the system (so C/C++, etc). Think normal DLLs or libs. Java can load these native libraries through JNI.

READ ALSO:   What is transmission and distribution losses?

Why Java is a robust language?

Java is robust as it is capable of handling run-time errors, supports automatic garbage collection and exception handling, and avoids explicit pointer concept. Java has a strong memory management system. It helps in eliminating errors as it checks the code during both compile and runtime.

What are native methods of object class in Java?

Methods of object class in java :

  • protected native Object clone() throws CloneNotSupportedException.
  • public boolean equals(Object obj)
  • protected void finalize() throws Throwable.
  • public final native Class getClass()
  • public native int hashCode()
  • public String toString()
  • public final native void notify()

What is native method interface?

Native Method Interface (JNI) is part of JDK that connects Java code with native applications and libraries that are written in other programming languages, such as C, C++, and assembly. Access libraries that already written in another programming language.