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Java Java Objects Creating the MVP Remaining Characters

Posted by Alex Medalla
Alex Medalla
1,028 Points

im stuck on this

could anyone explain this to me?

Tweet.java 
public class Tweet {
  private String text;

  public Tweet(String text) {
    this.text = text;
  }

  public String getText() {
    return text;
  }

  public void setText(String text) {
    this.text = text;

}

 public static final int MAX_CHARS = 140;{
}

4 Answers

Liam Clarke
Liam Clarke
19,938 Points

OK lets break down the question, you have done this is the previous videos, it is just asking for a lot at once.

  • Add a new constant that defines the max chars allowed and set it 140. Use proper case for constants. (A general rule for creating constants is to put them in full caps like below.)
int MAX_CHARS = 140;
  • Ensure it is accessible off the class,
public int MAX_CHARS = 140;
  • and that it cannot be changed.
public static final int MAX_CHARS = 140;
Trent Christofferson
Trent Christofferson
18,846 Points
Trent Christofferson
Trent Christofferson
18,846 Points

What Liam Clarke said but also you should put public static final int MAX_CHARS = 140; above public Tweet(String text). Also, you don't need the {} for it because it is not a method.

Alex Medalla
Alex Medalla
1,028 Points

so where am I supposed to put this new line of code now?

Liam Clarke
Liam Clarke
19,938 Points
Liam Clarke
Liam Clarke
19,938 Points

I forgot to mention that part. Variables are usually declared at the top so put it next to the other variable which is already declared.

public static final int MAX_CHARS = 140;
private String text;

Don't get confused with the word constant, it is just a variable like you have been using, a constant is a variable that's value does not change, I hope this clears things up for you.

Apologies for the markup, I'm replying on my phone.

Alex Medalla
Alex Medalla
1,028 Points

so should it look like this or do i need to put something in between the variables

'''public static final int MAX_CHARS = 140; private String text; public class Tweet { private String text;

public Tweet(String text) { this.text = text; }

public String getText() { return text; }

public void setText(String text) { this.text = text; } } '''

Liam Clarke
Liam Clarke
19,938 Points
Liam Clarke
Liam Clarke
19,938 Points

The correct answer to the challenge is:

public class Tweet {
  public static final int MAX_CHARS = 140;
  private String text;

  public Tweet(String text) {
    this.text = text;
  }

  public String getText() {
    return text;
  }

  public void setText(String text) {
    this.text = text;
  }

  public int getRemainingCharacterCount() {
    return MAX_CHARS - text.length();
  }
}

I'd recommend re-watching the previous 2 videos just to clarify the difference between methods and constants, i think you was mixing them up.

Good luck