class

Call a Class From another class

by

Suposse you have Class1 public class Class1 { //Your class code above } Class2 and then you can use Class2 in different ways. Class Field public class Class1{ private Class2 class2 = new Class2(); } Method field public class Class1 { public void loginAs(String username, String password) { Class2 class2 = new Class2(); class2.invokeSomeMethod(); //your … Read more

.class vs .java

by

A .class file is a compiled .java file. .java is all text and is human readable..class is binary (usually). You compile a java file into a class file by going to the command line, navigating to the .java file, and running javac “c:\the\path\to\your\file\yourFileName.java” You must have a java SDK installed on your computer (get it … Read more

What is a class constant?

by

JLS-8.3.1.1. static Fields says (in part) A static field, sometimes called a class variable, is incarnated when the class is initialized (§12.4). JLS-4.12.4. final Variables says (in part) A constant variable is a final variable of primitive type or type String that is initialized with a constant expression (§15.28) tl;dr Putting that together, a class constant is a static final field.

Node cannot be resolved to a type

by

I’ve seen similar behaviour in the past and know of two possible reasons: Your build path has somehow changed, leaving out your Node class, or the project providing it has compile errors, or similar. Given your description of the problem, this probably isn’t relevant in your case. Some Eclipse screwup. For me, this was always … Read more

How can I design a class named allergy

by

requirement: design a class named allergy that provides information about the allergy of a patient. e.g. who reported the allergy(patient/doctor/relative), different symptoms of the allergy that are detected, severity, method that returns when was that allergy detected in that patient. I am thinking of something like this: [java]public abstract class Allergy{ private String reporter; private … Read more