using class in java
public class HelloWorld {
public static void main(String[] args) {
// how to use class in java
class User{
int score;
// method that can be used outside the class
public boolean hasWon(){
if(score >= 100){
return true;
} else {
return false;
}
}
}
User dave = new User();
dave.score = 20;
System.out.println(dave.hasWon());
}
}object in java
Objects: came from class, we can create multiple objects from a class
ArrayList<> list = new ArrayList<>();
Class refName OBJECT
each object has its own copy of instance variable
· declared outside the blocks or methods
Object: Instance of the class. We can store different data's to objects
Object Creation: with new keyword.
ClassName obj = new ExistingConstructor;how to make a class in java
// Public creates avaliability to all classes/files
public class Object {
// Instance of a variable per each class created
public int a = 1;
// Private restricts in local space (within these brackets)
private int b = 5;
// Defaults as public
int c = 0;
// Method Examples
void setB(int B)
{
b = B;
// No return b/c 'void'
}
int getA()
{
return b;
// Return b/c 'int' in front of method
}
}Copyright © 2021 Codeinu
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