Intro to Java Programming Final Exam Study Guide Questions and Answers Rated A+

Intro to Java Programming Final Exam Study Guide Questions and Answers Rated A+ What will happen if you divide a double by zero? It returns Infinity How do you print text in Java? Using Sln() What symbol is used to denote a single-line comment in Java? // What is the result of dividing an integer by zero in Java? ArithmeticException What keyword is used to create an object in Java? new 2 How do you declare a constant variable in Java? Using the final keyword Which data type is used to store decimal numbers in Java? float or double What is the purpose of the break statement in Java? To exit a loop or switch statement What is the difference between == and equals()? == compares memory locations, equals() compares content How do you convert a string to lowercase? Using toLowerCase() Which operator is used for bitwise AND? & 3 What is method overriding? Redefining a method in a subclass that exists in the parent class What will "hello world".replace("world", "Java") return? hello Java What does the default keyword do in a switch statement? Specifies the code to run if no case matches How do you check if an ArrayList is empty? Using isEmpty() What is the difference between List and Set? List allows duplicates, Set does not How do you generate a random integer in Java? Using RInt() or Mm() 4 What is the purpose of the hashCode() method? It generates a hash value for an object How do you check if a character is a digit? Using CDigit() What is an enum in Java? A special class representing a group of constants What is the result of IInt("100")? 100 What is the default value of a boolean variable in Java? false Which keyword is used to define a class in Java?