TheUnSupportedOperationExceptionis thrown to indicate that the requested operation is not supported. This exception extends theRuntimeExceptionclass and thus, belongs to those exceptions that can be thrown during the operation of the Java Virtual Machine (JVM). It is an unchecked exception; therefore,...
Exception propagation in Java - an exception is first thrown from the top of the stack and if it is not caught, it drops down the call stack to the previous method. After a method throws an exception, the runtime system attempts to find something to handle it. The set of possible "som...
When you see an error message likejava.lang.RuntimeException: null, it generally means that a RuntimeException was thrown, and the message associated with the exception is null. In other words, no specific error message was provided when the exception was created. This might be due to an e...
Runtime is also when a program is running. That is, when you start a program running in a computer, it is runtime for that program. In some programming languages, certain reusable programs or "routines" are built and packaged as a "runtime library." These routines can be linked to and...
The runtime system searches the call stack for a method that contains a block of code that can handle the exception. This block of code is called an exception handler. The search begins with the method in which the error occurred and proceeds through the call stack in the reverse order in...
a Java method, the method will create an exception object and hands it to the runtime system. The exception object do contains the information about exception including its type and state of the program when error occurred. Runtime system is then responsible to find some code to handle error...
A Java™ runtime environment (JRE) is a set of components to create and run a Java application. A JRE is part of a Java development kit (JDK). A JRE is made up of a Java virtual machine (JVM), Java class libraries, and the Java class loader. JDKs are used to develop Java sof...
Now, let’s delve into them in greater detail. A HashMap in Java is a robust data structure that efficiently stores and retrieves key-value pairs. Falling under the ‘Map’ interface in the Java Collections Framework, HashMap offers a dynamic and flexible means of organizing data. The Has...
Programs created in Java offerportabilityin a network.In Java, thesource codeis compiled intobytecode, which can run anywhere in a network, on aserveror on aclientthat has a Java virtual machine (JVM). In contrast, many other programming languages compile code into platform-specificbinary files...
To handle this exception, Java provides a classNullPointerExceptionlocated in thejava.langpackage. We can use this class in thecatchblock to specify the exception type and then catch it to avoid code break. The most basic example to understand theNullPointerExceptionclass is to create astringobj...