Databases
StackOverflow2013
Postsdbo
POjava 1st program crits
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POjava 1st program crits
    primarykey
    data
    text
    <p>Just started learning Java, wrote a basic program that calculates the area of user selected shapes. Can I get crits and comments on things I've done right and wrong. I'm guessing a lot will be bad programming but that's why I'm here.</p> <p>Also 1 question, when calling my methods I need to put the full path i.e. areaprog.areacode.. Do you know why this is? Code for both classes below:</p> <p><strong>Main Program</strong></p> <pre><code>package areaprog; import java.util.Scanner; public class mainprog { public static void main (String [] args){ //Area Menu Selection System.out.println("What shape do you need to know the area of?\n" + "1: Square?\n" + "2: Rectangle?\n" + "3: Triangle?\n" + "4: Circle? \n" + "5: Exit\n" ); //User input for menu Scanner reader = new Scanner(System.in); System.out.println("Number: "); int input = reader.nextInt(); reader.nextLine(); //Depending on user selection, depends on what method is called using switch. Scanner scan = new Scanner(System.in); //Square selection if (input == 1){ System.out.println("What is a length of 1 side of the Square?\n"); double s1 = scan.nextInt(); double SqAns = areaprog.areacode.square(s1); System.out.println("The area of you square is: " + SqAns); } //Rectangle selection if (input == 2){ System.out.println("What is the width of your rectangle?.\n"); double r1 = scan.nextInt(); System.out.println("What is the height of your rectangle?\n"); double r2 = scan.nextInt(); double RecAns = areaprog.areacode.rect(r1, r2); System.out.println("The area of your rectangle is: " + RecAns); } //Triangle selection if (input == 3){ System.out.println("What is the base length of the triangle?."); double t1 = scan.nextInt(); System.out.println("What is the height of your triangle?"); double t2 = scan.nextInt(); double TriAns = areaprog.areacode.triangle(t1, t2); System.out.println("The area of your triangle is " + TriAns); } //Circle selection if (input == 4){ System.out.println("What is the radius of your circle?."); double c1 = scan.nextInt(); double CircAns = areaprog.areacode.circle(c1); System.out.println("The area of your circle is " + CircAns); } //Exit application if (input == 5){ System.out.println("Goodbye."); System.exit(0); } } } </code></pre> <p><strong>Area Calculations</strong></p> <pre><code>package areaprog; public class areacode { public static double rect(double width, double height) { double a_value = width * height; return a_value; } public static double circle(double radius){ double PI = Math.PI; double a_value = PI * Math.pow(radius, 2); return a_value; } public static double square(double side) { double a_value = Math.pow(side, 2); return a_value; } public static double triangle(double base , double height) { double a_value = (base/2)* height; return a_value; } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USShivam
    1. UStmcraig
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POjava 1st program crits
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    2. VO
      singulars
      1. POjava 1st program crits
      1. This table or related slice is empty.
      1. VTClose
    3. VO
      singulars
      1. POjava 1st program crits
      1. This table or related slice is empty.
      1. VTClose
    1. COYour question seems to belong here: http://codereview.stackexchange.com/
      singulars
      1. POjava 1st program crits
      1. USBenjamin Gruenbaum
    2. COThanks for that will make sure i add code to there for review.
      singulars
      1. POjava 1st program crits
      1. UStmcraig
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload