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

Wesley Rhodes
Wesley Rhodes
816 Points
Posted by Wesley Rhodes
Wesley Rhodes
816 Points

Unreachable while loop and missing return statement.

./GoKart.java:25: error: unreachable statement while(!isFullyCharged()){ ^ ./GoKart.java:28: error: missing return statement } ^ 2 errors

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 isBatteryEmpty() {
    return mBarsCount == 0;
  }

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

}

2 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Because the return statement immediately exits the method, no other statement after it can't be executed. It looks like the code you wrote after the return statement in isFullyCharged() is supposed to go into another method.

Wesley Rhodes
Wesley Rhodes
816 Points
Wesley Rhodes
Wesley Rhodes
816 Points

I tried putting the while loop before the return statement and that back fired. I need another return statement after the loop that returns true, I think.