Below is the code for a Time class that has both an equals method and a hashCode method; however, the body of the hashCode method is missing. In the text box, write the code you would put inside the body of the hashCode method. Remember that a hashCode with no collisions is better than a hashCode that has collisions and a hashCode with no gaps in the values is better than a hashCode that has gaps. public class Time { private int hour; // A number between 1 and 12 private int min; // A number between 0 and 59 private boolean pm; // True if the time is pm. public Time(int hour, int min, boolean pm) { this.hour = hour; this .min = min; this.pm = pm; } public int getHour() { return hour; } public int getMin() { return min; } public boolean isPM() { return pm == true; } public boolean isAM() { return pm == false; } public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Time other = (Time) obj; if (hour != other.hour) return false; if (min != other.min) return false; if (pm != other.pm) return false; return true; } public int hashCode() { // INSERT CODE HERE } }
Below is the code for a Time class that has both an equals method and a hashCode method; however, the body of the hashCode method is missing. In the text box, write the code you would put inside the body of the hashCode method. Remember that a hashCode with no collisions is better than a hashCode that has collisions and a hashCode with no gaps in the values is better than a hashCode that has gaps. public class Time { private int hour; // A number between 1 and 12 private int min; // A number between 0 and 59 private boolean pm; // True if the time is pm. public Time(int hour, int min, boolean pm) { this.hour = hour; this .min = min; this.pm = pm; } public int getHour() { return hour; } public int getMin() { return min; } public boolean isPM() { return pm == true; } public boolean isAM() { return pm == false; } public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Time other = (Time) obj; if (hour != other.hour) return false; if (min != other.min) return false; if (pm != other.pm) return false; return true; } public int hashCode() { // INSERT CODE HERE } }
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
Problem 1PE
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Below is the code for a Time class that has both an equals method and a hashCode method; however, the body of the hashCode method is missing. In the text box, write the code you would put inside the body of the hashCode method. Remember that a hashCode with no collisions is better than a hashCode that has collisions and a hashCode with no gaps in the values is better than a hashCode that has gaps.
public class Time {
private int hour; // A number between 1 and 12
private int min; // A number between 0 and 59
private boolean pm; // True if the time is pm.
public Time(int hour, int min, boolean pm) {
this.hour = hour;
this .min = min;
this.pm = pm;
}
public int getHour() { return hour; }
public int getMin() { return min; }
public boolean isPM() { return pm == true; }
public boolean isAM() { return pm == false; }
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Time other = (Time) obj;
if (hour != other.hour)
return false;
if (min != other.min)
return false;
if (pm != other.pm)
return false;
return true;
}
public int hashCode() {
// INSERT CODE HERE
}
}
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