Introduction to Programming Using Java v1.0

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Exam contains 46 questions

DRAG DROP -
You are writing a Java program that collects patient information and stores it in a database.
You need to ensure that the program stores data using the least amount of memory.
Which data type should you use to complete each variable declaration? To answer, drag the appropriate data type from the column on the left to its code segment on the right. Each data may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Select and Place:




Answer :

References:
http://www.tutorialspoint.com/java/java_basic_datatypes.htm

DRAG DROP -
You are writing a Java method that evaluates an arithmetic formula.
The method accepts an int value named number, raises the value to the second power, and returns the negative value of the result.
How should you complete the code? To answer, drag the appropriate code segment to the correct position. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:




Answer :

HOTSPOT -
You are creating a method that converts a string representation of a number into an actual number.
The numbers passed into the method include whole numbers and fractional numbers.
How should you complete the code? To answer, select the appropriate code segments in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:




Answer :

References:
https://docs.oracle.com/javase/tutorial/java/data/converting.html

DRAG DROP -
You attend an interview for a job as a Java programmer.
You need to declare a two by three array of the double type with initial values.
How should you complete the code? To answer, drag the appropriate code segment to the correct location. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:




Answer :

References:
https://www.dummies.com/programming/java/java-use-arrays-with-two-dimensions-or-more/

HOTSPOT -
You are interviewing for a job as a Java developer. You need to evaluate the following code. Line numbers are included for reference only.


For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:



Answer :

References:
https://www.tutorialspoint.com/java/java_strings.htm

The question requires that you evaluate the underlined text to determine if it is correct.
You should use an int data type to store the numeric value 3,000,000,000 (3 billion) so that the least amount of memory is used.
Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

  • A. No change is needed.
  • B. a short
  • C. a byte
  • D. a long


Answer : D

You need to evaluate the following code segment:


What happens when the code segment is run?

  • A. iNum has a value of 0.
  • B. An exception is thrown.
  • C. iNum has a value of 2.
  • D. iNum has a value of 3.


Answer : C

DRAG DROP -
You are writing a Java method.
The program must meet the following requirements:
-> Accept a String parameter firstName
-> Display a welcome message that contains firstName
-> Ensure that the first letter of the name is capitalized, and the remaining letters are in lowercase
How should you complete the code? To answer, drag the appropriate code segment to the correct position. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:




Answer :

References:
http://www.tutorialspoint.com/java/java_strings.htm

You work as a Java programmer.
You need to convert a numeric String to a primitive double value.
What code segment should you use?

  • A. Double.valueOf(numberString);
  • B. double.parseDouble(numberString);
  • C. String.parseDouble(numberString);
  • D. Double.parseDouble(numberString);


Answer : B

References:
https://www.javacodeexamples.com/convert-string-to-primitive-example/140

DRAG DROP -
Your instructor asks you to evaluate four arithmetic code segments.
What is the value of each code segment? To answer, drag the appropriate value from the column on the left to its code segment on the right. Each data may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
Select and Place:




Answer :

HOTSPOT -
You are writing a Java console program. The program accepts command line arguments.
You need to ensure that the main method parses and handles each command line argument.
How should you complete the code? To answer, select the appropriate code segments in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:




Answer :

HOTSPOT -
You work as an intern Java programmer at Adventure Works. Your team lead asks you to create a method.
The method must meet the following requirements:
-> Accept an int array
-> Check for duplicate values in the array
-> Stop the outer loop as soon as a duplicate value has been detected and return true
-> Return false if all values in the array are unique
How should you complete the code? To answer, select the appropriate code segments in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:




Answer :

References:
https://stackoverflow.com/questions/3951547/java-array-finding-duplicates

HOTSPOT -
You are interviewing for a job as a Java developer. You need to demonstrate your understanding of switch statements.
For each of the following code segments, select Yes if the code segment can be changed to a switch statement with up to three case statements. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:




Answer :

References:
https://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

HOTSPOT -
You are writing a Java method.
The method must meet the following requirements:
-> Accept a String array named entries
-> Iterate through entries
-> Stop the iteration and return false if any element has more than 10 characters
-> Otherwise, return true
How should you complete the code? To answer, select the appropriate code segments in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:




Answer :

DRAG DROP -
Traders hires you to write a Java program to manage account openings.
To open a new account, a user must meet one the following requirements:
-> be over 65 years old and have a minimum annual income of 10,000
-> be at least 21 and have an annual income greater than 25,000
How should you complete the code? To answer, drag the appropriate operator to the correct position. Each operator may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:




Answer :

References:
https://www.tutorialspoint.com/java/java_basic_operators.htm

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Exam contains 46 questions

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