No, that is not possible in Java. In Java, all arguments to methods are passed by value. Note that variables of non-primitive type, which are references to objects, are also passed by value: in that case, a reference is passed by value. Note that passing a reference by value is not the same as passing by reference.
You can’t use the class name as the name for a method. The only “methods” that can share a name with the class are constructors. One fix would be to rename your class from isPalindrome to PalindromeFinder or something. That would also better align with Java naming conventions. EDIT: Note that you never actually called your method in main; … Read more
See the java doc for JTextField Sample code can be:
First of all, for initializing a container you cannot use a primitive type (i.e. int; you can use int[] but as you want just an array of integers, I see no use in that). Instead, you should use Integer, as follows: For adding elements, just use the add function: Last, but not least, for printing the ArrayList you may use the build-in functionality … Read more
This is a form of bit-packing where the most significant bit of each byte is used to determine if another byte should be read. Essentially, this allows you to encode values in a fewer amount of bytes than they would normally require. However, there is the caveat that, if the number is large, then more than the normal amount of bytes … Read more
Your method returns a Point because you return result which is an instance of Point. If you want a double (value) for the distance you should do it this way:
You just have to go to your Module settings > Project and specify a “Project compiler output” and make your modules inherit from project. (For that go to Modules > Paths > Inherit project. This did the trick for me.
Your code Should be You’re assigning an int type to coinValue and that is being evaluated as a bool inside the if statement.
The source code for clear(): The source code for removeAll()(As defined in AbstractCollection): clear() is much faster since it doesn’t have to deal with all those extra method calls. And as Atrey points out, c.contains(..) increases the time complexity of removeAll to O(n2) as opposed to clear‘s O(n).
Double is an object and double is a primitive data type. See this answer for more details. The Double class wraps a value of the primitive type double in an object. An object of type Double contains a single field whose type is double. Source: http://docs.oracle.com/javase/7/docs/api/java/lang/Double.html