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What are Checked and UnChecked Exception?
A checked exception is some subclass of Exception (or Exception itself), excluding class RuntimeException and its subclasses. Making an exception checked forces client programmers to deal with the possibility that the exception will be thrown.
Example: IOException thrown by java.io.FileInputStream's read() method·
Unchecked exceptions are RuntimeException and any of its subclasses. Class Error and its subclasses also are unchecked. With an unchecked exception, though, the compiler doesn't force client programmers either to catch the exception or declare it in a throws clause. In fact, client programmers might not even know that the exception could be thrown.
Example: StringIndexOutOfBoundsException thrown by String's charAt() method· Checked exceptions must be caught at compile time. Runtime exceptions do not require to be. Errors often cannot be.
Differentiate between Primitives and Objects Everything in Java is an "Object", as every class by default inherits from class "Object", except a few primitive data t
The problem statement is pretty simple. We need a software implementation of a Point of Sale terminal at a typical store. The users of the system are the cashiers sitting at the sa
List the precedence table? At last let's add the && , || , & , | and ? operators to the precedence table *, /, % Multiplicative operators +, - Additi
Describe java operators? An operator is a symbol which operates on one or more arguments to generate a result. The Hello World program is so easy it doesn't use any operators,
A preconfigured JMS object (a resource manager connection factory or a destination) formed by an administrator for the use of JMS clients and placed in a JNDI namespace
ActionForm is javabean which shows the form inputs containing the request parameters from the View referencing the Action bean.
A framework for building server-side user interfaces for Web applications is written in the Java programming language.
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how to create batch files of java program
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