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The Java Native Interface (JNI) lets you integrate native code into programs written in the Java programming language.

• attach.c is a C program that is a variation of the invoke.c program that works only on Windows. For supporting information see The Java Tutorial Continued: Java Native Interface.
  
  
• CatchThrow.java shows how to catch and throw exceptions raised by native code. See the related native method implementation: CatchThrow.c. For supporting information see The Java Tutorial Continued: Java Native Interface.
  
  
• FieldAccess.java contains a class with one class integer member variable and an instance string member variable. This simple program calls the native method accessFields, which prints out the value of these two member variables and sets them to new values. See the the related native method implementation: FieldAccess.c. For supporting information see The Java Tutorial Continued: Java Native Interface.
  
  
• HelloWorld.java declares one native method. See the related header file: HelloWorld.h, and the related native method implementation: HelloWorldImp.c. For supporting information see The Java Tutorial Continued: Java Native Interface.
  
  
• invoke.c is a C program that invokes the Java virtual machine (JVM¹). For supporting information see The Java Tutorial Continued: Java Native Interface.
  
  
• Prompt.java has a native method that accepts and prints a Java string. See the related header files: Prompt.h, and Prompt.c. For supporting information see The Java Tutorial Continued: Java Native Interface.