What’s the purpose of equal method?
In Java, equal method is used to compare two object based on some specific condition like the value of field.
Example:
ObjectComparisonExample.java
public class ObjectComparisonExample
{
public static void main(String[] args)
{
//creating constructor of the Double class
Double x = new Double(123.45555);
//creating constructor of the Long class
Long y = new Long(9887544);
//invoking the equals() method
System.out.println(“Objects are not equal, hence it returns “ + x.equals(y));
System.out.println(“Objects are equal, hence it returns “ + x.equals(123.45555));
}
}
Output
Area of rectangle: 6.0 Area of circle: 12.56
Note: If you compare by == operator, it compares reference variable, not compare the value.
