We have a class LogManager in our Java project which looks like this: public class LogManager { public void log(Level logLevel, Object... args) {
Consider the following code: object U { def foo(s:String) = true } val boolType = Class.forName(\"java.lang.Boolean\")
There is a strange thing happening when I execute the following code: 开发者_JAVA百科private void doStuff(Long inLong) {
I am confused as to why Integer and int can be 开发者_如何转开发used interchangeably in Java even though one is a primitive type and the other is an object?
According to the documentation of the as operator, as \"is used to perform certain types of conversions between compatible reference types\".Since Nullable is actually a value type, I would expect as
Java does not allow primitive types to be used in generic data structures. E.g. ArrayList<int> is not allowed. The reason is, primitive types can not be directly converted to Object. However Jav
This question already has answers here: Closed 11 years ago. Possible Duplicate: Wrapper class and == operator
I\'m working with an interface that takes type Object as its input.This is unfortunate for me as I have primitive data that I sometimes need to pass in through the interface.This of course forces me t
Is using an arraylist of Tuple(double,int,int) slower than three separate arraylists? I want to avoid creating lots of Tuple objects, bu开发者_如何学Pythont does method 2 create objects by autoboxing?
A simple expression: Object val = true ? 1l : 0.5; What type is val? Well, logically, val should be a Long object with value 1. But Java thinks that val is a Double with value 1.0.
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