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Java Java Objects (Retired) Harnessing the Power of Objects Incrementing

James Mackey
PLUS
James Mackey
Courses Plus Student 994 Points
Posted by James Mackey
James Mackey
Courses Plus Student 994 Points

My while loop is wrong i think

.

GoKart.java 
public class GoKart {
  public static final int MAX_ENERGY_BARS = 8;
  private String mColor;
  private int mBarsCount;

  public GoKart(String color) {
    mColor = color;
    mBarsCount = 0;
  }

  public String getColor() {
    return mColor;
  }

  public void charge() {
    mBarsCount = MAX_ENERGY_BARS;
  }
  public boolean charging() {
    boolean wasCharged = false;
    if (!isFullyCharged()) {
      mBarsCount--;
      wasCharged = true;
    }
    return wasCharged;
  }   while (charging()){
    System.out,println("Charging");
  }
  public boolean isBatteryEmpty() {
    return mBarsCount == 0;
  }

  public boolean isFullyCharged() {
    return mBarsCount == MAX_ENERGY_BARS;
  }

}
Esther Strom
Esther Strom
8,028 Points

Just FYI, you have a comma in your output where there should be a dot.

System.out,println("Charging");

should be

System.out.println("Charging");

3 Answers

Jeremy Hill
Jeremy Hill
29,567 Points

It looks like you might be overthinking it a little. Here is what I got:

public class GoKart {
  public static final int MAX_ENERGY_BARS = 8;
  private String mColor;
  private int mBarsCount;

  public GoKart(String color) {
    mColor = color;
    mBarsCount = 0;
  }

  public String getColor() {
    return mColor;
  }

  public void charge() {
    //mBarsCount = MAX_ENERGY_BARS;
    while(!isFullyCharged()){
     mBarsCount++; 
    }
  }

  public boolean isBatteryEmpty() {
    return mBarsCount == 0;
  }

  public boolean isFullyCharged() {
    return mBarsCount == MAX_ENERGY_BARS;
  }

}
James Mackey
PLUS
James Mackey
Courses Plus Student 994 Points
James Mackey
James Mackey
Courses Plus Student 994 Points

So the while loop allows for the battery to be charged except when its fully charged??? :/...

Jeremy Hill
Jeremy Hill
29,567 Points
Jeremy Hill
Jeremy Hill
29,567 Points

The while loop checks a condition; in this case it is checking to see if the battery is fully charged- if it is false then it will continue to increment the mBarsCount until isFullyCharged returns true. The isFullyCharged() method will check to see if mBarsCount is equal to MAX_ENERGY_BARS, it will return true if mBarsCount is equal. So the while loop runs the code while the condition (isFullyCharged()) returns false, as soon as it returns true the loop ends.

I hope this helps.