Given the class definitions on the next page, what does the following code print?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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3. scrambled methods
Given the class definitions on the next page, what does the following code print?
A a = new A();
Bb = new B();
C c= new C();
Dd = new D();
a.both(“w");
b.both("x");
c.both("y");
d.both("z");
a = c;
a.both(“ac");
Transcribed Image Text:3. scrambled methods Given the class definitions on the next page, what does the following code print? A a = new A(); Bb = new B(); C c= new C(); Dd = new D(); a.both(“w"); b.both("x"); c.both("y"); d.both("z"); a = c; a.both(“ac");
public class A{
public void one(int a)
{ System.out.printIn(“one-a="+a); }
public int two(String b)
{ System.out.printin("two-b="+b); return 2; }
public void both(String s)
{ one(two(s)); }
}
public class B extends A{
public void one(int a)
{ System.out.printin(“B has "+a);
super.one(a+2);
System.out.println(“Goodbye B" );
}
public int two(String b)
{ System.out.println(“Bb"+b); return 3; }
}
public class C extends A{
public int two(String b)
{ System.out.printin(“Cb"+b);
int x = super.two(b+"x");
System.out.printIn(“C got “+x);
return x-4;
}
}
public class D extends C{
public void one(int a)
{ System.out.printin(“Done"+a);
int y = super.two(“D");
super.one(y);
}
Transcribed Image Text:public class A{ public void one(int a) { System.out.printIn(“one-a="+a); } public int two(String b) { System.out.printin("two-b="+b); return 2; } public void both(String s) { one(two(s)); } } public class B extends A{ public void one(int a) { System.out.printin(“B has "+a); super.one(a+2); System.out.println(“Goodbye B" ); } public int two(String b) { System.out.println(“Bb"+b); return 3; } } public class C extends A{ public int two(String b) { System.out.printin(“Cb"+b); int x = super.two(b+"x"); System.out.printIn(“C got “+x); return x-4; } } public class D extends C{ public void one(int a) { System.out.printin(“Done"+a); int y = super.two(“D"); super.one(y); }
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