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

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;
  }

}

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

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