If not, then the JVM looks further down the chain of catch blocks until the appropriate handler is found.Īfter executing a catch block, control is transferred to the optional finally block. If a catch block has the required exception handler, control passes to it. When an exception is thrown in a try block, the JVM looks for an appropriate exception handler in the next catch block. These keywords are used to create special constructs in the code: try constructs. finally - defines an optional block of code that, if present, is executed regardless of the results of the try block.catch - defines a block of code where exceptions are handled.try - defines a block of code where an exception can occur.For this, Java has a mechanism known as exception handling.Ī few words about keywordsException handling in Java is based on the use of the following keywords in the program: Unlike humans in the real world, a program must know exactly how to handle these situations. In a program, exceptions can occur due to invalid user actions, insufficient disk space, or loss of the network connection with the server.Įxceptions can also result from programming errors or incorrect use of an API. What's an Java exception?In the programming world, errors and unforeseen situations in the execution of a program are called exceptions. In this article, we'll try to figure out how Java programs deal with them. A human is able to cope with such unforeseen circumstances quite easily. You go to the bathroom to shower only to discover that the pipes are frozen. For example, you get up for work in the morning and look for your phone charger, but you can't find it anywhere. Everyday life is full of situations that we don't anticipate. Hello! In today's lesson, we'll talk about Java Exceptions.
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