![]() ![]() The UnsatisfiedLinkError error is a subclass of the class which means this error is captured at program startup, during the JVM’s class loading and linking process. More specifically, this error is thrown whenever the JVM is unable to find an appropriate native-language definition of a method declared native, while attempting to resolve the native libraries at runtime. If a Java program is using a native library but is unable to find it at runtime for some reason, it throws the runtime error. UnsatisfiedLinkError Error: What is It & When does It Happen? To access native methods from the loaded libraries, method stubs declared with the native keyword are used. The main difference between the two is that the latter doesn’t require the absolute path and file extension of the library to be specified-it relies on the system property instead. ![]() ![]() Java loads native libraries at runtime by invoking the System.load() or the System.loadLibrary() method. Native void someNativeMethod(String arg) The conventional idiom for loading these libraries in Java is presented in the code example below. The JNI enables Java code to call and be called by native applications and libraries written in other languages and it enables programmers to write native methods to handle situations where an application cannot be written entirely in Java. For this purpose, Java provides the Java Native Interface (JNI), which allows Java code that runs inside a Java Virtual Machine (JVM) to interoperate with applications and libraries written in other programming languages, such as C, C++, and assembly. There are certain scenarios like hardware-software integrations and process optimizations where using libraries written for different platforms can be very useful or even necessary. ![]() Introduction: Using Native Libraries in JavaĪ native library is a library containing code compiled for a specific (native) architecture. ![]()
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