WXME0106 ## &wxtextwxtabwxmediawximage$(lib "comment-snip.ss" "framework")+(lib "collapsed-snipclass.ss" "framework")drscheme:sexp-snipdrscheme:syntax-snipclass%drscheme:number,(lib "number-snip.ss" "drscheme" "private")drscheme:bindings-snipclass%drscheme:lambda-snip%drscheme:define-snip%gb:core gb:canvasgb:editor-canvas gb:slider gb:gauge gb:listbox gb:radiobox gb:choicegb:text gb:message gb:button gb:checkboxgb:vertical-panel gb:panelgb:horizontal-panel!(lib "readable.ss" "guibuilder")java-comment-box%java-interactions-box%"drscheme:vertical-separator-snip%wxbaddrscheme:xml-snip(lib "xml-snipclass.ss" "xml")drscheme:scheme-snip"(lib "scheme-snipclass.ss" "xml")test-case-box%wxlocK ZZ StandardK Courier New ZZ?\???""Matching Parenthesis Style?\???""????&&(framework:syntax-coloring:scheme:symbol????&&)framework:syntax-coloring:scheme:keyword????&&????t)framework:syntax-coloring:scheme:comment????t????)&(framework:syntax-coloring:scheme:string????""*framework:syntax-coloring:scheme:constant????""????<$-framework:syntax-coloring:scheme:parenthesis????<$????@'framework:syntax-coloring:scheme:error????@????'framework:syntax-coloring:scheme:other????????Qp1drscheme:check-syntax:lexically-bound-identifier????Qp????D*drscheme:check-syntax:imported-identifier????D%profj:syntax-coloring:scheme:keyword????????""$profj:syntax-coloring:scheme:string????""%profj:syntax-coloring:scheme:literal????""%profj:syntax-coloring:scheme:comment????t#profj:syntax-coloring:scheme:error????@(profj:syntax-coloring:scheme:identifier????&&%profj:syntax-coloring:scheme:default????F???????XMLF???????G???????????PPG????PPG????dK Courier New ZZ???????????????? ???? ????????""????""????""????""???? ? ? ??""K Courier New ??????F?\ZZZ???""F?ZZZZ?????????????K ZZ?\???(F?\ZZZ???(drscheme:check-syntax:keywordF?\ZZZ???(F?ZZZZ???@'drscheme:check-syntax:unbound-variableF?ZZZZ???@????$$F?ZZZZ???$$%drscheme:check-syntax:bound-variableF?ZZZZ???$$ drscheme:check-syntax:primitiveF?ZZZZ???$$????3'F?ZZZZ???3'drscheme:check-syntax:constantF?ZZZZ???3'?\??? drscheme:check-syntax:tail-call?\???F?ZZZZ???<$drscheme:check-syntax:baseF?ZZZZ???<$K????dK Courier New ZZK ZZZZK-adobe-courier ZZZZF?ZZZZ???@F?ZZZZ???$#F?ZZZZ???>&G?ZZZZ??????F?ZZZZ???QQG?ZZZZ???QQG?ZZZZ???dK ZZZZK Courier New ZZZZF?ZZZZ???PPG?ZZZZ???PPKCourier ZZZZKCourierZZZZF?\ZZZF?\ZZZ???F?ZZ^Z???F?ZZZZ???F?\ZZZ???K?ZZZZ??????KVT100 ZZZZK?ZZZZ??????K?ZZZZ???dF?ZZZZ???F?ZZZZ???F?ZZZZ???F?ZZZZ???**F?ZZZZ???G?ZZZZ???F?ZZZZ???F ZZZZ??????F?ZZZZ??? h-link-styleF?ZZZZ???F@\ZZZ??????F?\ZZZ??????rpF?ZZZZ??????tpsF?ZZZZ???22F?ZZ]Z??????F?ZZ]Z???@xpqpzK?ZZZZ??????zK?\ZZZ??????K?ZZZZ???>&K?ZZZZ???$#F?ZZZZ??????K?ZZZZ???""pF?ZZ]Z??????F?ZZZZ?????? F?ZZZZ??????F?ZZZZ?????? ??????????????F ZZ?^???????????F ZZF@\??????F?\??????F?\???F???????F????F?\???22F?]??????F?33@\??????F????K????<$K?\???K????<$K?\????\K?\??????F????""F?\???""K????F?]???@F?]??? ???? ????""?L?????????D????L???D??\]???syntax-coloring:Java:keyword?\]????\]???dsyntax-coloring:Java:string?\]???dsyntax-coloring:Java:literal?\]???d?\]???iiisyntax-coloring:Java:comment?\]???iii?\]???@syntax-coloring:Java:error?\]???@?\]??? syntax-coloring:Java:identifier?\]????\]???syntax-coloring:Java:default?\]???K ZZ????**????????G????F ZZ///////////////////////////////////////////////////////////////////////////////////// abstract class AMail {  int weight;   int rate;     Template: ...other.weight... ...other.rate... ...other.basePrice()... ...other.actualPrice()...    // compute the base price of postage for this item   int basePrice() {     return this.weight * this.rate;   }    // compute the actual price of postage for this item   abstract int actualPrice();    // determine if the postage for this item is less than for other given item   boolean isCheaper(AMail other){     return this.actualPrice() < other.actualPrice();      }     }   class Letter extends AMail {  int fees;   Letter (int weight, int rate, int fees) {   this.weight = weight;   this.rate = rate;    this.fees = fees;   }  )#Template ...this.weight... ...this.rate... ...this.fees... ...this. basePrice()... ...this. actualPrice()...    // compute the actual price of postage for this letter   int  actualPrice(){     return this.basePrice() + this.fees;   }  }  v   AMail ltr1 = new Letter(2, 20, 120); t   AMail ltr2 = new Letter(3, 20, 0);  D )"Testing the methods in the Letter class" J ltr1. basePrice() == 40 U  ltr2.basePrice() == 60   H ltr1. actualPrice() == 160 R ltr2. actualPrice() == 60   e  ltr2. isCheaper(ltr1) == true  f  ltr1. isCheaper(ltr2) == false   class Ad extends AMail {    Ad (int weight, int rate) {    this.weight = weight;    this.rate = rate;   }  Template ...this.weight... ...this.rate... ...this. basePrice()... ...this. actualPrice()...    // compute the actual price of postage for this piece of advertisement   int  actualPrice(){     return this.basePrice();   }  }  ]   AMail ad1 = new Ad(2, 10); b   AMail ad2 = new Ad(8, 20);  @ %"Testing the methods in the Ad class" Y  ad1.basePrice() == 20  T  ad2.basePrice() == 160  V  ad1. actualPrice() == 20  Q ad2. actualPrice() == 160  c  ad1. isCheaper(ad2) == true  d  ad2. isCheaper(ad1) == false   class Package extends AMail {  int insAmount;    // in hundreds of dollars  int insRate;      // per 100 dollars    Package (int weight, int rate, int insAmount, int insRate) {    this.weight = weight;    this.rate = rate;     this.insAmount = insAmount;       this.insRate = insRate;         }  x.Template ...this.weight... ...this.rate... ...this.insAmount... ...this.insRate... ...this. basePrice()... ...this. actualPrice()...    // compute the actual price of postage for this package   int  actualPrice(){     return this.basePrice() + this.insAmount * this.insRate;   } }   AMail pkg1 = new Package(24, 10, 5, 30);   AMail pkg2 = new Package(30, 10, 6, 25);  h  "Testing the methods in the Package class" V  pkg1. basePrice() == 240  [  pkg2. basePrice() == 300   X  pkg1. actualPrice() == 390  X  pkg2. actualPrice() == 450   e  pkg1. isCheaper(pkg2) == true  f  pkg2. isCheaper(pkg1) == false   C ("Testing the methods in the AMail class" f  pkg1. isCheaper(ltr1) == false  e  ltr1. isCheaper(pkg1) == true  e  ltr1. isCheaper(ad2) == false