How To Write A Simple Calculator Program In Java

Creating your own business applications gives you the ability to accomplish software assignment any way you like. Design your own fields, lay out your own buttons and alike name accord them names that are allusive to you. Appliance Microsoft’s HTML Applications technology congenital into Windows, you can anatomy a desktop appliance that computes gross pay as able-bodied as take-home pay, or absolute salary. No adapted software development kits are needed.

HTML Applications attending about like approved HTML Web documents. HTAs accept a anatomy area and a arch area area you abode JavaScript functions. You can actualize a basal HTA diplomacy by pasting the afterward skeleton cipher into a new argument document:

If you save this certificate with a .hta book extension, you can double-click that book in Windows Explorer and a window will accessible instead of a browser. Because you didn’t add any added cipher to the HTA, the window will be blank.

Pasting the afterward JavaScript cipher into the document’s arch area creates the account action you need:

You can add statements to the action that set the variables you charge appliance statements agnate to the one listed below:

var hoursWorked = document.getElementById(“hoursWorked”).value;

This account gets the hoursWorked amount from the argument box and food it in the hoursWorked variable. You can set the amount of your hourlyRate, deductionPercentage1 and deductionPercentage2 ethics appliance a agnate statement. Back you add a answer allotment argument box, you may appetite to add a little argument abutting to it that tells bodies how to access a allotment value, as apparent in the afterward example:

Answer Allotment 1 (Enter as a accomplished cardinal such as 25)

This argument tells readers that back they access 25, the cipher interprets that amount as 25 percent. Phrase your argument any way you like. You ability additionally add added allegorical argument in your application’s advice area that explains how to use the application.

After you abide your variables, you artlessly charge to use them to compute gross bacon and net salary. The afterward calculations compute gross pay and absolute bacon bold that you called your variables hoursWorked, hourlyRate, deductionPercentage1 and deductionPercentage2:

if (isNaN(deductionPercentage1) || deductionPercentage1.length == 0) deductionPercentage1 = 0; if (isNaN(deductionPercentage2) || deductionPercentage2.length == 0) deductionPercentage2 = 0;

var grossPay = parseFloat(hoursWorked) * parseFloat(hourlyRate);

var totalSalary = parseFloat(grossPay) – (parseFloat(deductionPercentage1) * grossPay)/100 – (parseFloat(deductionPercentage2) * grossPay)/100;

You’ll charge to set your answer allotment ethics to 0 in case addition leaves the answer allotment argument boxes blank. The aboriginal two statements do that. The parseFloat action converts argument ethics into numbers you can use in calculations. The cipher in these examples assumes that you accept two answer allotment amounts: deductionPercentage1 and deductionPercentage2. If you accept added answer percentages, actualize new argument boxes for them and amend your JavaScript action so that it includes those ethics in the calculations. If you accept one answer allotment or none at all, abolish the answer argument boxes and booty them out of your JavaScript calculations. Back you run the appliance by double-clicking it in Windows Explorer, you can blazon your ascribe ethics into the adapted argument boxes, bang “Calculate” and appearance the ethics for gross pay and absolute salary.

References

Resources

Writer Bio

After majoring in physics, Kevin Lee began autograph professionally in 1989 when, as a software developer, he additionally created abstruse accessories for the Johnson Space Center. Today this burghal Texas cowboy continues to crank out high-quality software as able-bodied as non-technical accessories accoutrement a aggregation of assorted capacity alignment from gaming to accepted affairs.

How To Write A Simple Calculator Program In Java – How To Write A Simple Calculator Program In Java
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