3. You are printing the classes of worldX and block, but then comparing the former to bug (whatever that is). If they are the same class and getClass ().equals () returns false, one possibility is that there are multiple class loaders at play. Share.

6. You need to implement the equals () method in your MyClass. The reason that == didn't work is this is checking that they refer to the same instance. Since you did new for each, each one is a different instance. The reason that equals () didn't work is because you didn't implement it yourself yet. The java.math.BigDecimal.equals() method checks for equality of a BigDecimal value with the object passed. This method considers two BigDecimal objects equal if only if they are equal in value and scale.
Yes, char is just like any other primitive type, you can just compare them by ==. You can even compare char directly to numbers and use them in calculations eg: public class Test { public static void main (String [] args) { System.out.println ( (int) 'a'); // cast char to int System.out.println ('a' == 97); // char is automatically promoted to
The isEqual () method of LocalDate class in Java checks if this date is equal to the specified date or not. Syntax: public boolean isEqual (ChronoLocalDate date2) Parameter: This method accept a single mandatory parameter date2 the other date to compare to and not null. Return Value: The function returns true if this date is equal to the In general the equality operator in Java performs a so called shallow comparison. In other words it compares the values that variables contains. Now the variables of primitive data types contains the value itself while the reference types contains reference to heap area which stores the actual content. That means that in your code snippet int b So the fastest way of comparing strings depends on: Whether your string objects are reused (like from a collection) or are always new (like from an input stream) Whether your strings differ at the start or the end of the string. Ignoring those facts, the majority of all programs will be fine with String.equals (). Tq4EhQ.
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    • how to use equals method in java