I'm a beginner in java, and this code to create a public int variable isn't working:
import java.awt.*;
public class Variable_Practice {
public static void main (String [] args){
public int number;
It gives me an error on the word number, and it says illegal parameter for modified number; only final is permitted.
There's probably a really simple answer, but I'm a beginner, so sorry if this is a bad question.
Local variables cannot have access modifiers (how would they even make sense?).
There are a few different approaches. Which one you need depends on what you want to do.
public class VariablePractice {
public static int number;
public static void main(String[] args) {
}
}
VariablePracticepublic class VariablePractice {
public int number;
public static void main(String[] args) {
}
}
mainpublic class VariablePractice {
public static void main(String[] args) {
int number;
}
}
public fields is considered to be bad practice by many software developers.public int foo; If I have a class that makes a value, foo, available to other classes, I have to write an accessor method, public int getFoo() that returns the value. Publishing the value via an accessor gives us more freedom to change the class: Maybe some day we will want to compute foo on-the-fly instead of storing it in a variable. If that ever happens, we only have to change the implementation of the getFoo() method. We don't have to change all of the other code that uses foo.
public fields is wrongly considered to be bad practice by many software developers.public/private/protected is meant at object level and not at method level. You could only use final instead of public in method declaration.
import java.awt.*;
public class Variable_Practice {
public static void main (String [] args){
final int number = 2;//or something on these lines
System.out.println(number);
}
You can't make Data Types public inside a method since they run locally inside the method they belong to.
To make the int public you must define it inside your class like so;
import java.awt.*;
public class Variable_Practice {
public int number;
public static void main (String [] args){
}
}
if a variable is declared inside a method, it doesn't require an access specifier. The variable inside a method is called a local variable and you just declare it like int x, double y... As part of your question, if you want to make your variable public, declare it inside your class, but outside the main method.
public class Variable_Practice {
public int number=2; // this is the place you decelare public variables
public static void main (String [] args){
System.out.println(number);
}
