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Questions and Answers
Which of the following statements about arrays in Java is correct?
Which of the following statements about arrays in Java is correct?
How can we declare an array in Java?
How can we declare an array in Java?
What does the size or length of an array represent in Java?
What does the size or length of an array represent in Java?
How can we initialize arrays in Java?
How can we initialize arrays in Java?
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What is the maximum number of elements the array 'data' can hold in the given example?
What is the maximum number of elements the array 'data' can hold in the given example?
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Which keyword is used to declare a method in Java?
Which keyword is used to declare a method in Java?
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What is the purpose of using methods in Java?
What is the purpose of using methods in Java?
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How do you call a method in Java?
How do you call a method in Java?
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Where must a method be declared in Java?
Where must a method be declared in Java?
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What are the parameters of a method?
What are the parameters of a method?
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Study Notes
Arrays in Java
- An array in Java can be declared by using the
[]symbol after the data type, followed by the name of the array. - The size or length of an array in Java represents the number of elements it can hold.
- An array in Java can be initialized by assigning values to it, either at the time of declaration or later using the
newkeyword. - The maximum number of elements an array can hold is determined by the size specified during its declaration.
Methods in Java
- A method in Java is declared using the
voidkeyword (for methods that do not return a value) or the data type of the return value (for methods that return a value). - The purpose of using methods in Java is to organize code into reusable blocks, improve code readability, and reduce redundancy.
- A method in Java can be called by using the method name followed by parentheses, which may contain arguments.
- A method in Java must be declared inside a class, and its access depends on the access modifier used (public, private, protected, etc.).
- The parameters of a method in Java are the variables declared in the method's parentheses, which are used to pass data to the method when it is called.
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Description
Test your knowledge of Java arrays with this quiz! Learn about declaring arrays, storing data, and the fixed size of arrays.
