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Start your free trialJoão Ignácio Brito
1,201 PointsCreating classes
Hello, I am !trying! to play around, creating classes and trying to use them but I am not having succes.... Can anyone help me?
class MeuNome {
public String firstName;
public String secondName;
public Nome() {
firstName = "João"
secondName = "Ignácio"
}
}
public class Example {
public static void main(String[] args) {
// Your amazing code goes here...
Nome Eu = new Nome();
System.out.printf("Hi my name is %s", Eu);
}
}
```java
2 Answers
Chris Jones
Java Web Development Techdegree Graduate 23,933 PointsHi Joao,
Good try - you did better than I probably did my first time writing classes:).
Here is my solution. A few notes:
1) Each class needs to be in it's own file in order for it to compile. So you need an Example.java file and a MeuNome.java file.
2) The constructor for a class needs to have the same name as the class. So, the MeuNome class' constructor has to have the name MeuNome. Nome won't work.
3) Add ";" at the end of field assignments inside your MeuNome constructor and qualify the fields with the this
keyword to reference the MeuNome object you're creating with the MeuNome constructor. So, instead of:
firstName = "João"
secondName = "Ignácio"
you want:
this.firstName = "João";
this.secondName = "Ignácio";
I hope this helps, let me know if you have any more questions!
Example.java
public class Example {
public static void main(String[] args) {
// Your amazing code goes here...
MeuNome Eu = new MeuNome();
System.out.printf("Hi my name is %s", Eu.firstName);
}
}
MeuNome.java
public class MeuNome {
public String firstName;
public String secondName;
public MeuNome() {
this.firstName = "João";
this.secondName = "Ignácio";
}
}
João Ignácio Brito
1,201 PointsThanks for the reply Chris!! Ohh it's good to know that I'm not the only one that had problems creating classes for the first time! Now it works!! Again, thank you for your help!
Chris Jones
Java Web Development Techdegree Graduate 23,933 PointsNot a problem, Joao! Object oriented programming and classes is a different way of thinking, so it takes some time to learn to think that way. You're definitely not alone. Be patient with yourself and keep at it and it will start to make more and more sense.