public static void main(String[] args) {
try{
String mod = "q0AwozeUj0VVkoksDQSCTj3QEgODomq4sAr02xMyIrWldZrNHhWfZAIcWt2MuAY3X6S3ZVUfOFXOrVbltRrO3F9Z6R8/jJIMv7wjkeVBFC5gncwGR0C3aV9gmF6II19jTKfF1sxb26iMEMAlMEOSnAAceNaJH91zBoaW7ZIh+qk=";
String exp ...
|
One thing that has always bothered me in Java is:
How do you create a single public class that should be used by downstream consumers but then nicely organize the classes it ... |
Is it bad practice or "dumb" to access methods/fields that are private in the public class from private classes in the same file. In my case I have a method that ... |
Generally I find in various books that main method should be public because it should be visible to classloader. But JVM executes(or provides special handling of) various private methods say readObject/writeObject ... |
Im learning java, coming from python there are quite a few things I don't fully understand that exist in java and the first of these has to be public and private ... |
Neither g++ nor javac emit warnings when the parameters to non-private methods are of private types (e.g., private nested classes). Such methods cannot be used by clients, but they can appear ... |
I have a public method and a private method. they are both supposed to return int values. The private method is the one that does all the work and the public ... |
|
private boolean isValid(int aRating)
{
return ...
|
First, I'd ask what class do you have that method in. Is it in the Servlet? If it is, remove it from there immediately. The role of a Servlet is to handle a GET, POST or HEAD. Place the method into a Plain Old Java Object, and in that case the method will be public so that the Servlet can call ... |
I am a beginning student of Java using the textbook Objects First with Java by David Barnes and Michael Kolling, with the educational IDE BlueJ. BlueJ provides a visual representation of classes and objects. You can click on an object on the Object Bench and select any of its public methods to run. Dialogues pop up to let you enter arguments ... |
Our lecturer and tutor encourage us to make all our methods public initially, just so we can test them interactively (very easy to do in the BlueJ educational IDE). But, when everything is working well, we are expected to make public methods private if they are not called from other classes. It can be quite a chore if you have a ... |
Hi, Ideally, the data representation of a class is nobody else's business but its own. That way, a client class wouldn't be tempted to directly make use of the data representation. If the data representation is changed in any way (pretty common thing really) the implementing methods of client classes will be unaffected. So make your instance and static variables (and ... |
well.... actually your "class PrivateClass" isn't really private. It's of the default protection level (sometimes called "package"). The default modifier gives access to all classes in the same package. So, your MainClass has access to PrivateClass. And also, any other class you add to this package, will have access to PrivateClass. Does that help? Can you write some code for a ... |
The question is this : why would you sometimes decalre the variables i.e. lcdField as private and sometimes declare it as public??? What do you achieve by doing it either private or public. If you declare a variable as "private" to the Calculator class, it can only be accessed by objects that is of the type Calculator class. If you declare ... |
Why private, public variables are not allowed inside a method public class Experiment { public void exper () { private int i = 2; } } When i try to compile this code this compile time error is coming javac Experiment.java Experiment.java:5: illegal start of expression private int i = 2; ^ 1 error What is this error? Why it is ... |
i came across the following question.. class Parent { private void method1() { System.out.println("Parent's method1()"); } public void method2() { System.out.println("Parent's method2()"); method1(); } } class Child extends Parent { public void method1() { System.out.println("Child's method1()"); } public static void main(String args[]) { Parent p = new Child(); p.method2(); } } according to my knowledge the o/p should be Parent's method2() ... |
Our lecturer and tutor encourage us to make all our methods public initially, just so we can test them interactively (very easy to do in the BlueJ educational IDE). But, when everything is working well, we are expected to make public methods private if they are not called from other classes. It can be quite a chore if you have a ... |
|
He is right. I guess I have to declare class public for constructors to be public? That would make sense I guess . . . Thanks! Oh, and do you need the class to be public to have public methods and variables as well? [ March 29, 2008: Message edited by: colton peterson ] |
|
|
We are using absolute Java 4th edition for this class, and chapter 4.1 prattles on for 32 pages of run on sentences. I've read 4.1 three times now, and all of chapter 4 twice, but I'm still not getting this ... I have this funny feeling that this book is kinda written as a guide to Java for people who already ... |
|
|
Are you sure that you want to have everything static here? You're possibly throwing away all the object-oriented goodness that java has to offer. Anyway, it seems to me that you can't get to that variable because it is buried within a method -- think scoping rules. I think that if you want to get at that variable your program design ... |
can you explain me this problem in a little detail ? Add a new constructor to the Box class: Box( Box oldBox ) This constructor creates a new Box object with identical dimensions as the old Box object. Of course, the old object is not changed. Now add some access methods. An access method is a method that can be used ... |
Because when you decide you want to log every time the variable is changed, or implement the Observer pattern and notify other objects every time the variable is changed, or apply business rules which might reject certain types of changes, or any number of other similar changes, it's a lot easier to do if you have the accessor methods. |
Hi I have this code I can't figure out: public class forsteOpgave { public static void main(String[]ard) { punkt[] ListeMedPunkter = new punkt[10]; for(int i = 0; i< ListeMedPunkter.length; i++) { punkt p = new punkt(); p.x = 5 * i; p.y = 3 + i; ListeMedPunkter = p; System.out.println(p.x); } } } class punkt { private int x; private int ... |
At a guess you are using the GUI editor? If so click on the item and look at the properites window you can change it there. By changing it in WordPad you will find that next time you edit the file in the GUI editor you changes might be lost. And for the love of FSM change the name. jTabbedPane1 is ... |
i was going through the java 's implementation of String and in the constructor following happens public String(String original) { int size = original.count; * char[] originalValue = original.value;* * char[] v; if (originalValue.length > size) { // The array representing the String is bigger than the new // String itself. Perhaps this constructor is being called // in order to ... |
|
|