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Java Java Objects Harnessing the Power of Objects Computed Properties

public method

A new public method named isBatteryEmpty that returns true if the battery has 0 bars remaining, and false otherwise.

GoKart.java
class GoKart {
  public static final int MAX_BARS = 8;
  private String color;
  private int barCount;
  public boolean isBatteryEmpty;

  public GoKart(String color) {
    this.color = color;
  }

  public String getColor() {
    return color;
  }

  public void charge() {
    barCount = MAX_BARS;
  }
}
public  isBatteryEmpty() {
if(MAX_BARS == 0){
return  true;
 }else {
return false;
  }
}

2 Answers

MAX_BARS is supposed to be your constant- it shouldn't be changed. barCount should probably be the one that you are checking against: if(barCount == 0)

You also might want to clean up your indentations:

public boolean  isBatteryEmpty() {
  if(MAX_BARS == 0){
    return  true;
  }else {
    return false;
  }
}
// When there are only single lines in your code blocks you don't need the curly braces:
// Also make sure that you have a return type in your method heading- Boolean in this case
public boolean isBatteryEmpty(){
  if(MAX_BARS == 0)
    return  true;
  else 
    return false;
}