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阅读以下说明和Java程序,将应填入(n)处的字句写在对应栏内。

 [说明]

 下面程序输出一个矩形面积,以及矩形区域上的假想的作物产量。

 [Java程序]

 public class MainJava {

  public static void main(String[] args){

    Lot_size small=new Lot_size();

    Lot_size medium=new Lot_size();

    small.set(5,5,5,25);

    medium.set(10,10,10,50);

    System.out.println("For a small lot of area"

        +small.get_area()+"\n");

    System.out.println("the actual crops are $"

        +small.get_data2()+"\n");

    System.out.println("and ideal crops are $"

        +small.get data()+"\n");

    System.out.println("For a medium lot of area"

        +medium.get_area()+“\n”);

    System.out.println("the actual crops are $"

        +medium.get_data2()+"\n");

    System.out.println ("and ideal crops are $"

        +medium.get_data()+"\n");

 }

}

class Crop_assessment{

 private int actual_crop;

 private int ideal_crop;

 public void set(int in_actual,int in ideal){

 actual_crop=in_actual;

 ideal_crop=in_ideal;

 }

 public int get_actual_crop(){return (1) ;}

 public int get_ideal_crop()(return (2) ;}

}

class Lot_size{

 private int length;

 private int width;

 private Crop_assessment crop= (3) ;

 public void set(int 1,int W,int a,int i){

   length=1;

   width=W;

   crop.set(a,i);

 }

 public int get_area(){return length*width;}

 public int get_data()freturn (4) ;}

 public int get_data2()(return (5) ;}

}

参考答案
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阅读以下说明和Java程序,将应填入(n)处的字句写在对应栏内。

 [说明]

 下面程序输出一个矩形面积,以及矩形区域上的假想的作物产量。

 [Java程序]

 public class MainJava {

  public static void main(String[] args){

    Lot_size small=new Lot_size();

    Lot_size medium=new Lot_size();

    small.set(5,5,5,25);

    medium.set(10,10,10,50);

    System.out.println("For a small lot of area"

        +small.get_area()+"\n");

    System.out.println("the actual crops are $"

        +small.get_data2()+"\n");

    System.out.println("and ideal crops are $"

        +small.get data()+"\n");

    System.out.println("For a medium lot of area"

        +medium.get_area()+“\n”);

    System.out.println("the actual crops are $"

        +medium.get_data2()+"\n");

    System.out.println ("and ideal crops are $"

        +medium.get_data()+"\n");

 }

}

class Crop_assessment{

 private int actual_crop;

 private int ideal_crop;

 public void set(int in_actual,int in ideal){

 actual_crop=in_actual;

 ideal_crop=in_ideal;

 }

 public int get_actual_crop(){return (1) ;}

 public int get_ideal_crop()(return (2) ;}

}

class Lot_size{

 private int length;

 private int width;

 private Crop_assessment crop= (3) ;

 public void set(int 1,int W,int a,int i){

   length=1;

   width=W;

   crop.set(a,i);

 }

 public int get_area(){return length*width;}

 public int get_data()freturn (4) ;}

 public int get_data2()(return (5) ;}

}

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