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1. Given:
10. abstract public class Employee {
11.   protected abstract double getSalesAmount();
12.   public double getCommision() {
13.     return getSalesAmount() * 0.15;
14.   }
15. }    
16. class Sales extends Employee {
17.   // insert method here
18. }
Which two methods, inserted independently at line 17, correctly complete the Sales class? (Choose two.)
A. double getSalesAmount() { return 1230.45; }
B. public double getSalesAmount() { return 1230.45; }
C. private double getSalesAmount() { return 1230.45; }
D. protected double getSalesAmount() { return 1230.45; }
Answer: BD

2. Given:
10. interface Data { public void load(); }
11. abstract class Info { public abstract void load(); }
Which class correctly uses the Data interface and Info class?
A. public class Employee extends Info implements Data {
   public void load() { /*do something*/ }
}
B. public class Employee implements Info extends Data {
   public void load() { /*do something*/ }
}
C. public class Employee extends Info implements Data {
  public void load(){ /*do something*/ }
  public void Info.load(){ /*do something*/ }
}
D. public class Employee implements Info extends Data {
  public void Data.load(){ /*do something*/ }
  public void load(){ /*do something*/ }
}
E. public class Employee implements Info extends Data {
  public void load(){ /*do something*/ }
  public void Info.load(){ /*do something*/ }
}
F. public class Employee extends Info implements Data{
  public void Data.load() { /*do something*/ }
  public void Info.load() { /*do something*/ }
}
Answer: A

3. Given:
11. public abstract class Shape {
12.   private int x;
13.   private int y;
14.   public abstract void draw();
15.   public void setAnchor(int x, int y) {
16.     this.x = x;
17.     this.y = y;
18.   }
19. }
Which two classes use the Shape class correctly? (Choose two.)
A. public class Circle implements Shape {
  private int radius;
}
B. public abstract class Circle extends Shape {
  private int radius;
}
C. public class Circle extends Shape {
  private int radius;
  public void draw();
}
D. public abstract class Circle implements Shape {
  private int radius;
  public void draw();
}
E. public class Circle extends Shape {
  private int radius;
  public void draw() {/* code here */}
}
F. public abstract class Circle implements Shape {
  private int radius;
  public void draw() { /* code here */ }
}
Answer: BE

4. Given
11. public interface Status {
12.   /* insert code here */ int MY_VALUE = 10;
13. }
Which three are valid on line 12? (Choose three.)
A. final
B. static
C. native
D. public
E. private
F. abstract
G. protected
Answer: ABD