Practice Midterm Exam

Part A:

1. b   2. c   3. d   4. d   5. d 
6. b   7. a   8. a   9. d  10. b

Part B:

String name = fields[0];
char gender = fields[1].charAt(0);
String city = fields[2];
int salary = Integer.parseInt(fields[3]);
if (gender == 'F' && city.equals("Chicago") {
    count++;
    sum += salary;
}

Part C:

Corrected source code files:

//------- Source code file: Pet.java
package it313.finalexam.petsalon; 
public class Pet { 
    private String _name; 
    private String _owner; 
    private int _age; 
    public Pet(String theName, String theOwner, int theAge) { 
        _name = theName; 
        _owner = theOwner; 
        _age = theAge; 
    } 
    public String getName( ) { 
        return _name; 
    } 
    public String getOwner( ) { 
        return _owner; 
    } 
    public int getAge( ) { 
        return _age;
    }
  
    @Override 
    public String toString( ) { 
        return String.format("%s %s %d", _name, _owner, _age); 
    } 
} 

//------- Source code file: Dog.java 
package it313.finalexam.petsalon; 
public class Dog extends Pet { 
    private String _breed; 
    public Dog(String theName, String theOwner, int theAge, String theBreed) { 
        super(theName, theOwner, theAge); 
        _breed = theBreed; 
    } 
    public String getBreed() { 
        return _breed; 
    } 
    
    @Override 
    public String toString( ) { 
        return super.toString( ) + String.format(" %s", _breed); 
    } 
} 

//------- Source code file: Test.java 
import java.util.ArrayList;
import it313.finalexam.petsalon.Dog;
public class Test { 
    public static void main(String[ ] args) { 
        ArrayList<Dog> col = new ArrayList<Dog>( );
        col.add(new Dog("Vini", "Jack", 2, "Pomeranian")); 
        col.add(new Dog("Klaus", "Nancy", 4, "German Shephard")); 
        col.add(new Dog("Sparky", "Steve", 1, "Dachshund")); 
        for(Dog d : col) { 
           System.out.println(d); 
        } 
        System.out.println( ); 
        System.out.println(col.get(2).toString( )); 
    } 
} 

Part D:

push
pop
peek
empty
search
  
=== Traditional tests ========================
import java.util.Stack;
public class Test1 {

	public static void main(String[] args) {
		Stack<String> s = new Stack<String>( ); 
		
		s.push("S");
		s.push("T");
		System.out.println(s.search("T"));
		System.out.println(s.pop( ));
		System.out.println(s.isEmpty( ));
		System.out.println(s.peek( ));
		System.out.println(s.isEmpty( ));
		System.out.println(s.pop( ));
		System.out.println(s.isEmpty( ));
	}
}

// Output:
1
T
false
S
false
S
true


=== Junit tests ==============================
import static org.junit.jupiter.api.Assertions.*;
import java.util.Stack;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

class Test2 {
    private Stack<String> s;
	@BeforeEach
	void setUp()  {
		s = new Stack<String>( ); 
	}

	@Test
	void test() {
		s.push("S");
		s.push("T");
		assertEquals(s.search("T"), 1);
		assertEquals(s.pop( ), "T");
		assertEquals(s.isEmpty( ), false);
		assertEquals(s.peek( ), "S");
		assertEquals(s.isEmpty( ), false);
		assertEquals(s.pop( ), "S");
		assertEquals(s.isEmpty( ), true);
	}
}