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Java Java Objects (Retired) Harnessing the Power of Objects Method Signatures

Posted by Jamar Slade
Jamar Slade
500 Points

Using Method Sigantures add a new Method drive that drives just 1 lap and takes no arguments.

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

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

public String getColor() { return mColor; }

public void drive(int laps) { // Other driving code omitted for clarity purposes mBarsCount -= laps; }

public void drive() { //<<<< The method I added// drive(laps); }

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

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

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

}

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

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

  public String getColor() {
    return mColor;
  }

  public void drive(int laps) {
    // Other driving code omitted for clarity purposes
    mBarsCount -= laps;
  }

  public void drive() {
   drive(laps);
  }

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

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

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

}
Jamar Slade
Jamar Slade
500 Points

Can anyone help explain to me what I'm doing wrong,

I called to the orginal method by using the new method

public void drive() { drive(laps); }

So maybe i called out to the original method with the wrong parmeter???

1 Answer

Jamar Slade
Jamar Slade
500 Points

Omgosh, my apologies that's what was meant by pass 1. So the first the first method gave the structure and the second drive method gave it substance to run? I guess i thought the 1 would have to had gone here:

public void drive(1) <<<<here

Thanks Craig, sorry I did not realize that, my minds playing trick on me