If you look at the scope of the variable ‘hoursWorked’ you will see that it is a member of the class (declared as private int) The two variables you are having trouble with are passed as parameters to the constructor. The error message is because ‘hours’ is out of scope in the setter.
You declared them, but you didn’t initialize them. Initializing them is setting them equal to a value: int a; // This is a declaration a = 0; // This is an initialization int b = 1; // This is a declaration and initialization You get the error because you haven’t initialized the variables, but you … Read more
Very simple question but I can’t do it. I have 3 classes: DrawCircle class import java.awt.*; import java.awt.event.*; import javax.swing.*; class DrawCircle extends JPanel { private int w, h, di, diBig, diSmall, maxRad, xSq, ySq, xPoint, yPoint; public DrawFrame d; public DrawCircle() { w = 400; h = 400; diBig = 300; diSmall = 10; … Read more
The WP Codex says to do this: // You wish to make $my_var available to the template part at `content-part.php` set_query_var( ‘my_var’, $my_var ); get_template_part( ‘content’, ‘part’ ); But how do I echo $my_var inside the template part? get_query_var($my_var) does not work for me. I’ve seen tons of recommendations for using locate_template instead. Is that … Read more
JAVA Variable declaration not allowed here
String one, two, three; one = two = three = “”; This should work with immutable objects. It doesn’t make any sense for mutable objects for example: Person firstPerson, secondPerson, thirdPerson; firstPerson = secondPerson = thirdPerson = new Person(); All the variables would be pointing to the same instance. Probably what you would need in … Read more
Of course it can be accessed as ClassName.var_name, but only from inside the class in which it is defined – that’s because it is defined as private. public static or private static variables are often used for constants. For example, many people don’t like to “hard-code” constants in their code; they like to make a public static or private static variable with a meaningful … Read more
You could assign value of n as 0 or any other value by default and use if(args.length > 0) { to check whether any arguments is given. Below is full example with comments: public class Infinity { public static void main(String args[]) { /* Start by assigning your default value to n, here it is 0 If valid argument is not … Read more
