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Java Java Objects Harnessing the Power of Objects Handling Exceptions

What am I doing wrong - catch exercise?

For the last catch error exercise, I wrote this:

class Example {

public static void main(String[] args) { GoKart kart = new GoKart("purple"); if (kart.isBatteryEmpty()) { System.out.println("The battery is empty"); } try {kart.drive(42);} catch (IllegalArgumentException iae){

System.out.println("The error was %s", iae.getMessage());
}

}

}

This is the error: ./Example.java:11: error: no suitable method found for println(String,String) System.out.println("The error was %s", iae.getMessage()); ^ method PrintStream.println() is not applicable (actual and formal argument lists differ in length) method PrintStream.println(boolean) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(char) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(int) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(long) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(float) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(double) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(char[]) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(String) is not applicable (actual and formal argument lists differ in length) method PrintStream.println(Object) is not applicable (actual and formal argument lists differ in length) 1 error

Example.java
class Example {

  public static void main(String[] args) {
    GoKart kart = new GoKart("purple");
    if (kart.isBatteryEmpty()) {
      System.out.println("The battery is empty");
    }
    try {kart.drive(42);}

    catch (IllegalArgumentException iae) {

      System.out.println("The error was %s", iae.getMessage())
    }

  }

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

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

  public String getColor() {
    return color;
  }

  public void charge() {
    barCount = MAX_BARS;
  }

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

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

  public void drive() {
    drive(1);
  }

  public void drive(int laps) {
    if (laps > barCount) {
      throw new IllegalArgumentException("Not enough battery remains");
    }
    lapsDriven += laps;
    barCount -= laps;
  }

}

1 Answer

Dino Šporer
Dino Šporer
5,430 Points

Insted of println , use printf :). System.out.println("The error was %s", iae.getMessage()), this is wrong!