Java Basics (medium)
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Questions and Answers

Which of the following is not a primitive datatype in Java?

  • string (correct)
  • double
  • boolean
  • int

    • Which of the following is a logical operator in Java?

  • =
  • && (correct)
  • >
  • +

    • What is the value of 'grade' if 'marks' is 75 in the given example?

  • D
  • C
  • B (correct)
  • A

    • Which operator is used to assign values of an expression to a variable in Java?

    <p>=</p> Signup and view all the answers

    What is the result of the expression 'x += 5' if the initial value of 'x' is 3?

    <p>8</p> Signup and view all the answers

    What is the purpose of conditional statements in Java?

    <p>To evaluate expressions based on a condition</p> Signup and view all the answers

    Which keyword is used to declare a method in Java?

    <p>void</p> Signup and view all the answers

    What is the purpose of the 'main' method in a Java program?

    <p>To execute the program</p> Signup and view all the answers

    What is the correct syntax for declaring an array in Java?

    <p>int[] array;</p> Signup and view all the answers

    Which loop in Java is used when the number of iterations is known?

    <p>For loop</p> Signup and view all the answers

    What is the purpose of the 'print' method in Java?

    <p>To display something on the screen</p> Signup and view all the answers

    Why does the main method in a Java program need to be declared as 'static'?

    <p>To allow the method to be called without creating an object of the class</p> Signup and view all the answers

    Which of the following is NOT a type of access specifier in Java?

    <p>package</p> Signup and view all the answers

    What is the return type of a method that does not return any value?

    <p>void</p> Signup and view all the answers

    Which part of a method contains the values passed to the method?

    <p>Arguments/Parameters</p> Signup and view all the answers

    What is the difference between function declaration and function definition?

    <p>Function declaration is the signature of the function, while function definition contains the body of the function.</p> Signup and view all the answers

    What is the terminating statement in a function body?

    <p>Return statement</p> Signup and view all the answers

    What is method overloading in Java?

    <p>Defining multiple methods with the same name but different arguments.</p> Signup and view all the answers

    Which type of loop in Java is exit controlled?

    <p>Do...while loop</p> Signup and view all the answers

    What is the purpose of the 'break' statement in Java?

    <p>To terminate the entire loop and come out of it</p> Signup and view all the answers

    What is the alternative for the 'else' part of the if...else if...else structure in Java?

    <p>Default case</p> Signup and view all the answers

    Which access specifier sets the accessibility of a method in Java?

    <p>Access_specifier</p> Signup and view all the answers

    Which type of loop in Java is entry controlled?

    <p>For loop</p> Signup and view all the answers

    What is the purpose of the 'continue' statement in Java?

    <p>To terminate a particular iteration of a loop</p> Signup and view all the answers

    Which of the following is true about classes in Java?

    <p>A class is a blueprint or template for creating objects</p> Signup and view all the answers

    Which of the following is true about objects in Java?

    <p>An object is an instance of a class</p> Signup and view all the answers

    What is the syntax for defining a class in Java?

    <p>access_specifier class className { Class definition containing variables and methods; }</p> Signup and view all the answers

    What is the purpose of comments in Java?

    <p>To increase the understanding and readability of the program</p> Signup and view all the answers

    What are the rules for writing a Java program?

    <p>Java uses higher CamelCase for class names and lower camelCase for method names</p> Signup and view all the answers

    What will be covered in the next article about Java?

    <p>Object-Oriented concepts of Java Programming</p> Signup and view all the answers

    Which keyword is used to declare a method in Java?

    <p>void</p> Signup and view all the answers

    What is the purpose of the 'break' statement in Java?

    <p>To terminate the execution of a loop</p> Signup and view all the answers

    What is the result of the expression 'x += 5' if the initial value of 'x' is 3?

    <p>8</p> Signup and view all the answers

    Which of the following is true about objects in Java?

    <p>Objects are instances of classes</p> Signup and view all the answers

    What is the purpose of the 'continue' statement in Java?

    <p>To skip the current iteration of a loop</p> Signup and view all the answers

    What is the correct syntax for declaring an array in Java?

    <p>int[] array</p> Signup and view all the answers

    Which of the following is NOT a valid access specifier in Java?

    <p>package</p> Signup and view all the answers

    What is the purpose of the 'return_type' in a method declaration?

    <p>It is the data type of the value returned by the method</p> Signup and view all the answers

    What is the difference between function declaration and function definition in Java?

    <p>Function declaration is the name of the method being defined, while function definition is the body of the method</p> Signup and view all the answers

    What is the purpose of the 'return' statement in a method body?

    <p>To return a value from the method</p> Signup and view all the answers

    What is method overloading in Java?

    <p>Defining multiple methods with the same name but different arguments</p> Signup and view all the answers

    What is the purpose of comments in Java?

    <p>To improve the readability of the code</p> Signup and view all the answers

    Which of the following is NOT a primitive datatype in Java?

    <p>string</p> Signup and view all the answers

    What is the result of the expression 'x extasciicircum y' if the values of 'x' and 'y' are 4 and 2 respectively?

    <p>8</p> Signup and view all the answers

    Which of the following is true about the ternary operator in Java?

    <p>It is used to evaluate a condition and choose between two expressions.</p> Signup and view all the answers

    What is the value of 'grade' after executing the following code?

    int marks = 75; char grade = (marks >= 80) ? 'A' : 'B';

    <p>'B'</p> Signup and view all the answers

    Which of the following is true about the logical AND operator in Java?

    <p>It returns true if both operands are true.</p> Signup and view all the answers

    What is the purpose of the 'break' statement in Java?

    <p>To exit a loop or switch statement.</p> Signup and view all the answers

    Which of the following is true about objects in Java?

    <p>Objects are instances of a class</p> Signup and view all the answers

    Which of the following is true about comments in Java?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is a rule for writing a Java program?

    <p>Use indentation for structuring your program</p> Signup and view all the answers

    Which of the following is true about loops in Java?

    <p>Loops are used to repeat a block of code a specific number of times</p> Signup and view all the answers

    Which of the following is true about the 'main' method in a Java program?

    <p>The 'main' method is the entry point of a Java program</p> Signup and view all the answers

    Which of the following is true about variables in Java?

    <p>Variables store data</p> Signup and view all the answers

    Which type of loop in Java is exit controlled?

    <p>Do...while loop</p> Signup and view all the answers

    Which keyword is used to terminate a particular iteration of a loop in Java?

    <p>Continue</p> Signup and view all the answers

    What is the purpose of the 'default' statement in a switch case structure?

    <p>To execute a default condition</p> Signup and view all the answers

    What is the purpose of access specifiers in Java?

    <p>To set the accessibility of a method</p> Signup and view all the answers

    What is the syntax for a for loop in Java?

    <p>for(initialization; test condition; update expression) { Body of the loop; }</p> Signup and view all the answers

    What is the purpose of methods in Java?

    <p>To make the program modular and simpler</p> Signup and view all the answers

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