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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.
What is difference between object state and behavior? Ans) If you change the state of an object, you ask it to perform a behavior. An object kept its states in a field e.g. vari
(Tic-Tac-Toe) Create class TicTacToe that will enable you to write a complete application to play the game of Tic-Tac-Toe. The class contains a private 3-by-3 rectangular array o
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Asynchronous control
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