The problem is that Arrays.asList takes a parameter of T… array. The only applicable T when you pass the int[] is int[], as arrays of primitives will not be autoboxed to arrays of the corresponding object type (in this case Integer[]). So you can do Arrays.asList(new Integer[] {1, 2, 3});.
Just wrap your primitives in a simple container and pass that as a parameter to AsyncTask, like this: private static class MyTaskParams { int foo; long bar; double arple; MyTaskParams(int foo, long bar, double arple) { this.foo = foo; this.bar = bar; this.arple = arple; } } private class MyTask extends AsyncTask<MyTaskParams, Void, Void> { … Read more
I am not sure whether I understood your intentions correctly, but let’s see if this one helps. public class TypedProperty<T> : Property where T : IConvertible { public T TypedValue { get { return (T)Convert.ChangeType(base.Value, typeof(T)); } set { base.Value = value.ToString();} } }
It’s all documented in section 5.1.3 of the JLS. In the first step, the floating-point number is converted either to a long, if T is long, or to an int, if T is byte, short, char, or int, as follows: If the floating-point number is NaN (ยง4.2.3), the result of the first step of the … Read more
Because it’s a local variable. This is why nothing is assigned to it : Local variables are slightly different; the compiler never assigns a default value to an uninitialized local variable. If you cannot initialize your local variable where it is declared, make sure to assign it a value before you attempt to use it. … Read more
Starting Java 8, there is support for unsigned long (unsigned 64 bits). The way you can use it is: Long l1 = Long.parseUnsignedLong(“17916881237904312345”); To print it, you can not simply print l1, but you have to first: String l1Str = Long.toUnsignedString(l1) Then System.out.println(l1Str);
No, string primitives do not have methods. As with numeric primitives, the JavaScript runtime will promote them to full-blown “String” objects when called upon to do so by constructs like: var space = “hello there”.indexOf(” “); In some languages (well, Java in particular, but I think the term is in common use) it’s said that … Read more
Character.getNumericValue(c) The java.lang.Character.getNumericValue(char ch) returns the int value that the specified Unicode character represents. For example, the character ‘\u216C’ (the roman numeral fifty) will return an int with a value of 50. The letters A-Z in their uppercase (‘\u0041’ through ‘\u005A’), lowercase (‘\u0061’ through ‘\u007A’), and full width variant (‘\uFF21’ through ‘\uFF3A’ and ‘\uFF41’ through … Read more
As explained in short C# (but also for other language compilers as well, like Java) There is a predefined implicit conversion from short to int, long, float, double, or decimal. You cannot implicitly convert nonliteral numeric types of larger storage size to short (see Integral Types Table for the storage sizes of integral types). Consider, … Read more
There is a class for every array type, so there’s a class for int[], there’s a class for Foo[]. These classes are created by JVM. You can access them by int[].class, Foo[].class. The direct super class of these classes are Object.class public static void main(String[] args) { test(int[].class); test(String[].class); } static void test(Class clazz) { … Read more