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Does the following class satisfy the Java Hash Code contract? Explain. public class Politician{ String firstName; String lastName; /...assume other fields and constructors are implemented public boolean equals(Object obj) { if (obj == this) return true; if (!(obj instanceof Politician)) return false; Politician pol = (Politician)obj; boolean returnVal = (this.firstName+this.lastName).equals(pol.firstName+pol.lastName)); return return Val; } public int hashCode() { return lastName.hashCode(); //last name is a String, so lastName.hashCode() is defined in the String implementatior } }

Does the following class satisfy the Java Hash Code contract? Explain. public class Politician{ String firstName; String lastName; /...assume other fields and constructors are implemented public boolean equals(Object obj) { if (obj == this) return true; if (!(obj instanceof Politician)) return false; Politician pol = (Politician)obj; boolean returnVal = (this.firstName+this.lastName).equals(pol.firstName+pol.lastName)); return return Val; } public int hashCode() { return lastName.hashCode(); //last name is a String, so lastName.hashCode() is defined in the String implementatior } }

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Does the following class satisfy the Java Hash Code contract? Explain. public class Politician{ String firstName; String lastName; /I...assume other fields and constructors are implemented public boolean equals(Object obj) { if (obj this) == return true; if (!(obj instanceof Politician) return false; Politician pol = (Politician)obj; boolean returnVal = (this.firstName+this.lastName).equals(pol.firstName+pol.lastName)); return returnVal; } public int hashCode() { return lastName.hashCode(); //last name is a String, so lastName.hashCode() is defined the String implementation }
Transcribed Image Text:Does the following class satisfy the Java Hash Code contract? Explain. public class Politician{ String firstName; String lastName; /I...assume other fields and constructors are implemented public boolean equals(Object obj) { if (obj this) == return true; if (!(obj instanceof Politician) return false; Politician pol = (Politician)obj; boolean returnVal = (this.firstName+this.lastName).equals(pol.firstName+pol.lastName)); return returnVal; } public int hashCode() { return lastName.hashCode(); //last name is a String, so lastName.hashCode() is defined the String implementation }
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