Consider The Following Code Snippet

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Trail: Learning the Java Language
Lesson: Language Basics

Answers to Questions and Exercises: Operators

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Answers to Questions

Consider the post-obit code snippet:
arrayOfInts[j] > arrayOfInts[j+1]              
Question: What operators does the code incorporate?
Answer: [], >, [], +
Consider the following code snippet:
int i = 10; int n = i++%5;              
Question: What are the values of i and n subsequently the code is executed?
Answer: i is eleven, and n is 0.]

Question: What are the concluding values of i and north if instead of using the postfix increase operator (i++), you use the prefix version (++i))?
Answer: i is 11, and n is ane.
Question: What is the value of i after the following code snippet executes?
int i = 8; i >>=2;              
Answer: i is two.
Question: What is the value of i after the following lawmaking snippet executes?
int i = 17; i >>=one;              
Answer: i is 8.

Exercises

Exercise: Write a program that tests whether a floating point number is zero. (Hint: You shouldn't generally use the equality operator == with floating betoken numbers, since floating signal numbers by nature are hard to match exactly. Instead, test whether the number is shut to zero.)
Solution: FloatTest

Exercise: Write a plan that calculates the number of US dollars equivalent to a given number of euros. Presume an exchange charge per unit of 0.781162 euros per dollar. If you want to command the format of the numbers your program displays, y'all can use the DecimalFormat course, which is discussed in Formatting Numbers with Custom Formats
Solution: CurrencyExchange
Write a program that uses the $.25 in a unmarried integer to stand for the truthful/simulated data shown in the following figure: Include in the programme a variable named status, and accept the program print the meaning of condition. For example, if status is 1 (only bit 0 is fix) the program should print something like this:
ready to receive requests              
Practice: Testify your code.
Solution: Bits
Exercise: What is the output when status is viii?
Solution:
unrecoverable error occurred                  
Do: What is the output when status is 7?
Solution:
ready to receive requests processing a request error recovery in progress                  