Latest Tutorials| Questions and Answers|Ask Questions?|Site Map



Home Answers Viewqa Java-Beginners Constructors .equals method

Have Programming Question? Ask it here!
 
 
 


Abha Sharma
Constructors .equals method
3 Answer(s)      2 years and 2 months ago
Posted in : Java Beginners


Hi, my two dates never match using .equals method and two different constructors.

o/p is like

examples.Pdate@192d342Blah dateexamples.Pdate@6b97fd

Code:

package examples;

public class Pdate{
    int Pday;
    int Pmonth;
    int Pyear;
    int d1,d2;
Pdate()
    {
    Pday=2;
    Pmonth=1;
    Pyear=1988;
    }
Pdate(int da,int mo,int ye){
    this.Pday=da;
    this.Pday=mo;
    this.Pday=ye;
    }

public static void main(String args[]){
    Pdate date1=new Pdate(2,1,1988);
    Pdate date2=new Pdate();

    {if (date1.equals(date2))
    System.out.println(date1+"Awesome date"+date2);
    else
    System.out.println(date1+"Blah date"+date2);
    }

}}

Advertisement
View Answers

May 31, 2012 at 3:38 PM


We have modified your code. It will check the two dates properly.

package examples;
import java.util.*;
public class Pdate extends Date{
    int Pday;
    int Pmonth;
    int Pyear;
    int d1,d2;
Pdate()
    {
    Pday=2;
    Pmonth=1;
    Pyear=1988;
    }
Pdate(int da,int mo,int ye){
    this.Pday=da;
    this.Pday=mo;
    this.Pday=ye;
    }

public static void main(String args[]){
    Pdate date1=new Pdate(2,1,1988);
    Pdate date2=new Pdate();

    if (date1.equals(date2))
    System.out.println(date1+"Awesome date"+date2);
    else
    System.out.println(date1+"Blah date"+date2);

}
}


May 31, 2012 at 3:38 PM


We have modified your code. It will check the two dates properly.

package examples;
import java.util.*;
public class Pdate extends Date{
    int Pday;
    int Pmonth;
    int Pyear;
    int d1,d2;
Pdate()
    {
    Pday=2;
    Pmonth=1;
    Pyear=1988;
    }
Pdate(int da,int mo,int ye){
    this.Pday=da;
    this.Pday=mo;
    this.Pday=ye;
    }

public static void main(String args[]){
    Pdate date1=new Pdate(2,1,1988);
    Pdate date2=new Pdate();

    if (date1.equals(date2))
    System.out.println(date1+"Awesome date"+date2);
    else
    System.out.println(date1+"Blah date"+date2);

}
}


May 31, 2012 at 7:13 PM


no it doesn't check the date properly still. both date1 and date2 are same, yet it still says "Blah date"..

also i don't understand how extending Date would be helpful, can u plz explain why?

Thanks..



Related Tutorials/Questions & Answers:
Constructors .equals method
Constructors .equals method  Hi, my two dates never match using .equals method and two different constructors. o/p is like examples.Pdate@192d342Blah dateexamples.Pdate@6b97fd Code: package examples; public class Pdate
Constructors .equals method
Constructors .equals method  Hi, my two dates never match using .equals method and two different constructors. o/p is like examples.Pdate@192d342Blah dateexamples.Pdate@6b97fd Code: package examples; public class Pdate
Advertisements
Equals()
Equals()  What is role of equals() method in camparator interface
equals method in java
Description: The equals method found in java.lang.object. It is use to check  state(data) of object not identifying the location in Memory of the object. It return the Boolean value. In other way it compare content of 
constructors
constructors  package Test; class B { B() { } private B() { } } public class A { public static void main(String[] args) { B b1 = new B(); } } Error: Duplicate method B in type B. Trying to run
Use of equals() method of  FloatBuffer class in java.
Use of equals() method of  FloatBuffer class in java.  ... equals(object obj) The equals() method tells this buffer is equals... class. It provides the following methods: Return type Method
Use of equals() method of ByteBuffer class in java.
Use of equals() method of ByteBuffer class in java.  In this tutorial, we...; The allocate(..)method allocate a new byte buffer. boolean equals(object obj) The equals() method tells this buffer is equals or not to another
Use of equals() method of LongBuffer class in java.
Use of equals() method of LongBuffer class in java.  In this tutorial, we...(..)method allocate a new long buffer. boolean equals(object obj) The equals() method tells this buffer is equals or not to another
Use of equals() method of IntBuffer class in java.
Use of equals() method of IntBuffer class in java.  In this tutorial, we...(..)method allocate a new int buffer. boolean equals(object obj) The equals() method tells this buffer is equals or not to another
ShortBuffer in java, Use of equals() method of ShortBuffer class in java.
Use of equals() method of ShortBuffer class in java.  In this tutorial.... boolean equals(object obj) The equals(...) method tells this buffer.... It provides the following methods: Return type Method
Difference between == and equals method in java
Description: For comparing equality of string ,We Use equals() Method... "equals()" method .  "==" compares the reference value of string object whereas equals() method is present in the java.lang.Object
Constructors
. Constructors are used to initialize the instance variables (fields) of an object. Constructors are similar to methods, but with some important differences. Constructor name is class name. A constructors must have the same name as the class its
Java file equals
Java file equals This section illustrates you the use of method equals... file class objects using equals() method. This method checks whether...); } } Through the method equals(), you can check the equality of two file
Constructors in Java
Constructors in Java  When do we use Constructors in JAva?   All object creation is done through constructors. If no constructor is specified, the compiler will supply a default empty constructor that basically does
equals and hashcode
to the equals() method because it is inherited from the Object class. However, this default... can override the default implementation of the equals() method defined...equals and hashcode  Could you please explain me why equals
difference b/w == and equals()
address whereas the equals() method is used to compare the values of the object...difference b/w == and equals()  what is the difference between == operator and equals()   Hi Friend, The == operator checks if the two
How are this() and super() used with constructors?
How are this() and super() used with constructors?   Hi, How are this() and super() used with constructors? thanks
Equals() and Hashcode() - Java Beginners
Equals and HashCode() are the methods of Object class. The Equals() method returns...Equals() and Hashcode()  What is Equals() and Hashcode()? what.... Thanks   can you give one hashtable prog using equals() and hashcode
Overriding equals and hashCode in Java
Overriding equals and hashCode in Java  Overriding equals and hashCode in Java
1024 bytes equals to
1024 bytes equals to  1024 bytes equals to   1024 bytes equals to 1 KB
constructors - Java Beginners
constructors  can constructors be inherited???  Hi friend, Constructors cannot be inherited, basically a constructor is not a method.Constructors are used to give a valid state for an object at creation
Thread Constructors
Thread Constructors       Several constructors are available for creating new Thread instances... the group2. Some important methods are: getName() ? This method is used
hashcode() and equals() - Java Beginners
hashcode() and equals()  plesae give an example of hashtable using equals() and hashcode()?  Hi Friend, Try the following code...) {this.id = id;} public int hashCode() { return id;} public boolean equals
objective c if string equals
objective c if string equals   Checking if a string is equal to ' " '   In objective c, isEqualToString is a keyword that allows you to check if the string is equal to or not. if ([text isEqualToString
Difference between equals() and == ?
. But one more difference is that equals() is a method and "= ="... equals() method in java. The equals() method which is defined in object class. equals() method behave same as the equality operator but rather then checking
Constructors, setters, getters - Java Beginners
Constructors, setters, getters  A bank charges $10 per month plus the following check fees for a commercial checking account: $.10 each for less..., getters, and a method that returns the bank?s service fees for the month. Use
hashcode() and equals() - Java Interview Questions
hashcode() and equals()  can you give one hashtable prog using equals() and hashcode()?PLease..thanks in advance
why we use constructors instead of methods in java?
why we use constructors instead of methods in java?   why we use constructors instead of methods in java
Equals() and Hashcode() - Java Interview Questions
Equals() and Hashcode()  What is Equals() and Hashcode()? what is the importance and where we use these methods? why and where we have to override... of hashtable using equals() and hashcode
AutoBoxing,==,!=,equals() - Java Interview Questions
AutoBoxing,==,!=,equals()  Hi, I am really confused of ==,!=,equals() operations on Autoboxing the new feature in java 5.0 . Can any one tell me... use ob1.equals(object ) method which return true if the comparing two object
What are constructors ? explain different types of constructor with example
What are constructors ? explain different types of constructor with example  Hi, What are constructors ? explain different types of constructor... constructor require. That's why the Constructors are used to initialize the instance
Constructors, setters, getters 2 - Java Beginners
Constructors, setters, getters 2  A bank charges $10 per month plus the following check fees for a commercial checking account: $.10 each for less..., getters, and a method that returns the bank?s service fees for the month. Use
Case-sensitive equals using Hibernate Criteria.
Case-sensitive equals using Hibernate Criteria.  How to check for case sensitive equals in Hibernate criteria?   package net.roseindia.main; import java.util.*; import net.roseindia.table.Employee; import
Case-insensitive equals using Hibernate Criteria.
Case-insensitive equals using Hibernate Criteria.  How to use Case-insensitive equals with Hibernate Criteria?   The Case Insensitive ignores the case of the latter. It Selects all the records of the table related
method
method   how and where, we can define methods ? can u explain me with full programme and using comments
method
method  can you tell me how to write an abstract method called ucapan() for B2 class class A2{ void hello(){ system.out.println("hello from A2"); }} class B2 extends A2{ void hello(){ system.out.println("hello from B2
why should we over ride hashCode(), when equals was over ride()?
why should we over ride hashCode(), when equals was over ride()?  why should we over ride hashCode(), when equals was over ride
Java BigDecimal equals example
Java BigDecimal equals example       Method evaluates bigdecimal object values as well as the scales allocated to the values. Method returns true only when both bigdecimal
Java Constructors
Java Constructors In this tutorial we will discuss in java constructor and its type with example. Constructors : A constructor is a special kind of method... of same class with different constructors and invoke method with both objects
Constructors - super
is created, it's necessary to call the constructors of all super classes.... For example, the first Point constructor (see Constructors) could be be written... constructor be called and use a setter method as an alternative. class MyWindow
method inside the method??
method inside the method??  can't we declare a method inside a method in java?? for eg: public class One { public static void main(String[] args) { One obj=new One(); One.add(); private static void add
Use Constructor in JSP
; This section illustrates you how to use constructors in jsp. Constructors are used to initialize the object. They are just like method declaration but they do not return value. Constructors are defined by their class name. Here
Method
Method       In this section, we will explore the concept of method in the reference of object oriented... and behaviors are defined by methods. Method : An brief introduction Methods
==, .equals(), and compareTo()
the equals() method to compare the values of objects. Comparing Object values with the equals() Method Use the equals() method to compare object values. The equals() method returns a boolean value
get method
get method   how to use get method: secure method is post method and most of use post method why use a get method
method question
method question  How do I figure out the difference in a method heading, a method body, and a method definition
Method Overloading
Method Overloading  In java can method be overloaded in different class
Method Overloading
Method Overloading  In java can method be overloaded in different class
 

 

 

DMCA.com