[Solved] Why 2 return statements are mandatory in equals method
[ad_1] return true is only executed if the if condition is true. For all other cases you need the return false 0 [ad_2] solved Why 2 return statements are mandatory in equals method
equals
[Solved] What is the need to override equals method in String class? [closed]
[ad_1] Not all “String in Java are interned”. Try reading something from a file or console, those Strings aren’t “interned”, thus equals() (and also hashcode()) needs to be overriden. 1 [ad_2] solved What is the need to override equals method in String class? [closed]
[Solved] Error Operator ‘==’ cannot be applied to operands of type ‘char’ and ‘string’ [closed]
[ad_1] Use ‘a’ and not “a”, the difference between char and string is subtle here but substantial. [ad_2] solved Error Operator ‘==’ cannot be applied to operands of type ‘char’ and ‘string’ [closed]
[Solved] Default implementation for hashCode() and equals() for record vs class in Java
[ad_1] In a nutshell the difference is simple: the default implementation of equals() and hashCode() for java.lang.Object will never consider two objects as equal unless they are the same object (i.e. it’s “object identity”, i.e. x == y). the default implementation of equals() and hashCode() for records will consider all components (or fields) and compare … Read more
[Solved] Difference between == and Equals in C# [duplicate]
[ad_1] == is an operator, which, when not overloaded means “reference equality” for classes (and field-wise equality for structs), but which can be overloaded. A consequence of it being an overload rather than an override is that it is not polymorphic. Equals is a virtual method; this makes it polymorphic, but means you need to … Read more
[Solved] == vs. in operator in Python [duplicate]
[ad_1] if 0 in (result1, result2, result3): is equivalent to: if result1==0 or result2==0 or result3==0: What you want is this: if (0,0,0) == (result1, result2, result3): Which is equivalent to: if result1==0 and result2==0 and result3==0: You could actually even do this: if result1==result2==result3==0: since you’re checking to see if all 3 variables equal … Read more
[Solved] Examining associated objects in equals() [closed]
[ad_1] While I think it is generally a good idea to avoid basing equality on associations, I would argue that this does not apply in all cases. While it is a good rule of thumb, there are likely a number of cases where this rule breaks completely. It is entirely dependent on the domain and … Read more
[Solved] How to check if a string equals to “}”
[ad_1] Just do str_.equals(“{“); or str_.equals(“}”); We are still not sure which brace EDIT: Ah now we have clarity. Use str_.equals(“}”); 3 [ad_2] solved How to check if a string equals to “}”
[Solved] Java , The equals() Method [closed]
[ad_1] Result of equals method depends very much on its implementation. Method equals of Object: public boolean equals(Object obj) { return (this == obj); } This means, that equals will return true, only if the two variables holds the references (therefore references to the same object). If it returns false, this must by caused by … Read more
[Solved] IndexOf not working on childList [closed]
[ad_1] public int indexOf(Object o) { if (o == null) { for (int i = 0; i < size; i++) if (elementData[i]==null) return i; } else { for (int i = 0; i < size; i++) if (o.equals(elementData[i])) return i; } return -1; } This is actual method in Arraylist ,after reading i came to … Read more
[Solved] Comparing java Strings with == [duplicate]
[ad_1] there is no custom operator overloading in java. [so you cannot overload it to call equals()] the equals() ensures you check if 2 Objects are identical,while == checks if this is the exact same object. [so no, using == does not invoke equals()]. 2 [ad_2] solved Comparing java Strings with == [duplicate]