|
| 1 | +importjava.util.*; |
| 2 | + |
| 3 | +publicclassAreaCalculator { |
| 4 | + |
| 5 | +publicstaticvoidmain(String[]args) { |
| 6 | + |
| 7 | +Scannerkeyboard =newScanner(System.in); |
| 8 | + |
| 9 | +System.out.println("Shape Area Calculator"); |
| 10 | + |
| 11 | +while(true) { |
| 12 | + |
| 13 | +System.out.println(); |
| 14 | +System.out.println("-=-=-=-=-=-=-=-=-=-"); |
| 15 | +System.out.println(); |
| 16 | +System.out.println("1) Triangle"); |
| 17 | +System.out.println("2) Rectangle"); |
| 18 | +System.out.println("3) Circle"); |
| 19 | +System.out.println("4) Quit"); |
| 20 | +System.out.println(); |
| 21 | + |
| 22 | +System.out.print("Which shape: "); |
| 23 | + |
| 24 | +intshape =keyboard.nextInt(); |
| 25 | +System.out.println(); |
| 26 | + |
| 27 | +if (shape ==1) { |
| 28 | +area_triangle(5,6); |
| 29 | + }elseif (shape ==2) { |
| 30 | +area_rectangle(4,5); |
| 31 | + }elseif (shape ==2) { |
| 32 | +area_circle(4); |
| 33 | + }elseif (shape ==4) { |
| 34 | +quit(); |
| 35 | +break; |
| 36 | + } |
| 37 | + |
| 38 | + } |
| 39 | + |
| 40 | + } |
| 41 | + |
| 42 | +publicstaticdoublearea_triangle(intbase,intheight) { |
| 43 | + |
| 44 | +Scannerkeyboard =newScanner(System.in); |
| 45 | + |
| 46 | +System.out.print("Base: "); |
| 47 | +base =keyboard.nextInt(); |
| 48 | + |
| 49 | +System.out.print("Height: "); |
| 50 | +height =keyboard.nextInt(); |
| 51 | + |
| 52 | +System.out.println(); |
| 53 | + |
| 54 | +intA = (base *height) *2; |
| 55 | + |
| 56 | +System.out.println("The area is " +A +"."); |
| 57 | + |
| 58 | +returnA; |
| 59 | + |
| 60 | +} |
| 61 | + |
| 62 | +publicstaticintarea_rectangle(intlength,intwidth){ |
| 63 | + |
| 64 | +Scannerkeyboard =newScanner(System.in); |
| 65 | + |
| 66 | +System.out.print("Length: "); |
| 67 | +length =keyboard.nextInt(); |
| 68 | + |
| 69 | +System.out.print("Width: "); |
| 70 | +width =keyboard.nextInt(); |
| 71 | + |
| 72 | +System.out.println(); |
| 73 | + |
| 74 | +intA =length *width; |
| 75 | + |
| 76 | +System.out.println("The area is " +A +"."); |
| 77 | + |
| 78 | +returnA; |
| 79 | +} |
| 80 | + |
| 81 | +publicstaticdoublearea_circle(intradius) { |
| 82 | + |
| 83 | +Scannerkeyboard =newScanner(System.in); |
| 84 | + |
| 85 | +System.out.print("Radius: "); |
| 86 | +radius =keyboard.nextInt(); |
| 87 | + |
| 88 | +System.out.println(); |
| 89 | + |
| 90 | +doubleA =Math.PI *radius *radius; |
| 91 | + |
| 92 | +System.out.println("The area is " +A +"."); |
| 93 | + |
| 94 | +returnA; |
| 95 | + |
| 96 | +} |
| 97 | + |
| 98 | +publicstaticStringquit() { |
| 99 | + |
| 100 | +System.out.println("GoodBye"); |
| 101 | +returnnull; |
| 102 | + |
| 103 | +} |
| 104 | + |
| 105 | +} |