class problem

[smray7]

I don't know what's wrong!
1 error found:
File: E:\week 10\Batter.java [line: 22]
Error: JOptionPane cannot be resolved

public class Batter
{
  private int playerNumber;
  private int numAtBats;
  private int numHits;
  private double battingAverage;
  
  public Batter()
  {
    playerNumber = 0;
    numAtBats = 1;
    numHits = 0;
    battingAverage = 0;
  }

public void calcAvg()
{
  battingAverage = numHits/numAtBats;
}
public void display()
{
 JOptionPane.showMessageDialog(null, "Stats for better" + playerNumber
                                 + "\n At Bats: " + numAtBats
                                 +"\tHits: " + numHits
                                 +"\tBatting Average: " + battingAverage);
}
}

Application to use Batter

public class UsesBatter
{
  public static void main(String[]args)
  {
    Batter batter1;
    batter1 = new Batter();
    batter1.calcAvg();
    batter1.display();
  }
  
}

[Fubarable]

JOptionPane must be imported,

import javax.swing.JOptionPane;

If you're going to be using it without using its fully qualified name.

[smray7]

omg, duh! thank you as always! anyhow, i'm wondering why my calcAvg method doesn't calc the avg?

import javax.swing.JOptionPane;
public class Batter // This is a class
{
  private int playerNumber;    //delcaration of data
  private int numAtBats;
  private int numHits;
  private double battingAverage;
  
  public Batter()    //his is a constructor
  {
    playerNumber = 0;
    numAtBats = 1;
    numHits = 0;
    battingAverage = 0;
  }

public void calcAvg()  //accesor method
{
  battingAverage = numHits/numAtBats;
}
public void display()  //accessor method 
{
 JOptionPane.showMessageDialog(null, "Stats for batter " + playerNumber
                                 + "\n At Bats: " + numAtBats
                                 +"\t Hits: " + numHits
                                 +"\t Batting Average: " + battingAverage);
}
public void setPlayerNumber(int pnum) // mutator method
{
  playerNumber = pnum;
}
public void setNumAtBats(int numBats)  //mutator method
{
  numAtBats = numBats;
}
public void setNumHits(int hits)  //mutator method
{
  numHits = hits;
}
}

application:

public class UsesBatter // This is an application that uses the class Batter
{
  public static void main(String[]args)
  {
    Batter batter1;          //object of batter class
    batter1 = new Batter();  // calling constructor
    batter1.calcAvg();       //calling method using object name
    batter1.display();
    
    Batter batter2;         // 2nd object of batter class
    batter2 = new Batter();
    batter2.setPlayerNumber(22);
    batter2.setNumAtBats(12);
    batter2.setNumHits(10);
    batter2.calcAvg();
    batter2.display();
  }
  
}

[Fubarable]

It does calculate average, but does so with int division, which means if you divide an int by an int, you'll get the integer result from the division and the remainder gets tossed out. In other words:

4/5 = 0
6/5 = 1
12/5 = 2

To do double division, cast either the numerator or the denominator to double:

battingAverage = (double) numHits/numAtBats;