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Final Jeopardy

This guide covers fundamental Java concepts, including how to compile and run a Java program using Javac and Java, understanding the Java Virtual Machine (JVM), data types for integers and real values, boolean expressions, conditional statements, and more. It explores key Java features such as portability (Write Once, Run Everywhere), identifier rules, and user input handling. This comprehensive overview is designed for both beginners and those looking to refresh their Java knowledge.

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Final Jeopardy

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  1. Final Jeopardy

  2. Java fundamental for 10 Q: How to compile and run a Java program? OL 10 A

  3. Java fundamental– 10 points A: What is Javac and Java? Table

  4. Java fundamental for 20 Q: A Java program contains one or more of this? OL 20 A

  5. Java fundamental for 20 A: What is CLASS? Table

  6. Java fundamental for 30 Q: This is needed to run the same Java program on different Operating Systems without having to recompile? OL 30 A

  7. Java Fundamental for 30 A: What is Java Virtual Machine (JVM) ? Table

  8. Java fundamental for 40 Q: The name of this tree has been used as another name for Java ? OL 40 A

  9. Java fundamental for 40 A: What is “OAK”? Table

  10. Java fundamental for 50 Q: This used to be the best selling point for Java (hint: refer to its portability with 4 words) OL 50 A

  11. Java fundamental for 50 A: What is “Write ONCE Run EVERYWHERE”? Table

  12. Numerical Data type 10 Q: Data types used to represent integer values? CF 10 A

  13. Numerical Data for 10 A: What are byte, short, int, long? Table

  14. Numerical Data for 20 Q: Data types to represent real values. CF 20 A

  15. Numerical data types for 20 A: What are float and double? Table

  16. Numerical data type for 30 Q: These symbols are allowed in a valid identifier? CR 30 A

  17. Numerical data type for 30 A: What are $ and _? Table

  18. Numerical Data type for 40 Q: Suppose we have: int x, y; x = 40; y = x / 6 What is the value of y? CF 40 A

  19. Numerical Data for 40 A: What is 6? Table

  20. Numerical data for 50 Q: The values of this can not be changed in the entire program? CF 50 A

  21. Numerical data for 50 A: What is constant? Table

  22. Boolean expression for 10 Q: Boolean expressions are evaluated to one of these values? IS 10 A

  23. Boolean expression for 10 A: What is true or false? Table

  24. Boolean expression for 20 Q: These are boolean operators in Java? IS 20 A

  25. Boolean Expression for 20 A: What are AND, OR, NOT? Table

  26. Boolean expression for 30 Q: Which are the six relational operators used in boolean expressions? • < • >= • <= • > • == • && • != • ! IS 30A

  27. Boolean expression for 30 A: What are A,B,C,D,E,and G? Table

  28. Boolean Expression for 40 Q: Evaluate this boolean expression: (1<2 || 4 <=3) IF 40 A

  29. Boolean expression for 40 A: What is true? Table

  30. Boolean expression for 50 Q: Evaluate this expression: (60%3 == 0) && (50%9 != 0) IF 50 A

  31. Boolean expression for 50 A: What is true? Table

  32. If/then/while/for for 10 Q: What is the output from the following code?. int number = 45; if (number != 45) { System.out.println(“Hello”); } else { System.out.println(“Bye”); } A. Hello B. Bye T10 A

  33. If/Then/While for 10 A: What is B? Table

  34. If/Then/While for 20 Q: What is the result of this switch statement: int number = 45; switch (number) { case 35: System.out.println(“Good”); case 45: System.out.println(“Fair”); case 55: System.out.println(“None”); } A. Good B. Fair C. None T20 A

  35. If/Then/While for 20 A: What is Fair? Table

  36. If/Then/While for 30 Q: What is this code doing? if (num1 * num2 * num3 < 0) { System.out.println(“This is good”); } else { System.out.println(“This is bad”); } T30 A

  37. If/Then/While for 30 A: What is “if products of these three numbers (num1,num2,num3) are negative, print out “This is good”. Otherwise, print out “This is bad” ? Table

  38. If/Then/While for 40 Q: These symbols are always found in an if statement T40 A

  39. If/Then/While for 40 A: What are ( and )? Table

  40. It/Then/While for 50 Q: The statements in the body of this loop must be executed at least ONCE T50 A

  41. If/Then/While for 50 A: What is DO-WHILE loop? Table

  42. Miscellaneous for 10 Q: Switch only support these data types ?. DM 10 A

  43. Miscellaneous for 10 A: What are char and integer (byte, short, int)? Table

  44. Miscellaneous for 20 Q: Operand is converted from a lower to a higher precision DM 20 A

  45. Miscellaneous for 20 A: What is implicit casting? Table

  46. Miscellaneous for 30 Q: How can we say 23 in Java. DM 30 A

  47. Miscellaneous for 30 A: What is Math.pow(2,3) ? Table

  48. Miscellaneous for 40 Q: JOptionPane.showInputDialog gets input from a user and return this data type DM 40 A

  49. Miscellaneous for 40 A: What is String? Table

  50. Miscellaneous for 50 Q: The value of this component can be changed in a Java program DM 50 A

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