If the input string is "plane", a Plane object should be stored in the variable result.

Question about the task

Mastering the static block

Java Core, Level 5, Lesson 12

Resolved

I'm stuck here. Not sure why this wouldn't be working.

1. In separate files, create Plane and Helicopter classes that implement the CanFly interface.
2. The Plane class must have a constructor with an int parameter (the number of passengers on board).
3. In the Solution class's static reset method:
3.1. Read a String from the console.
3.2. If the value is "helicopter", then assign a Helicopter object to the static CanFly field result.
3.3. If the value is "plane", then read a second value (an int, the number of passengers), and assign a Plane object to the static CanFly field result.
4. In the static block, initialize the CanFly field result by calling the reset method.
5. Close the input stream with the close() method.

Requirements:

The Plane class must be in a separate file and implement the CanFly interface.
The Helicopter class must be in a separate file and implement the CanFly interface.
The Plane class must have a constructor with an int parameter.
The Solution class must implement the public static void reset() method.
The reset method should read lines from the keyboard.
If the input string is "helicopter", a Helicopter object should be stored in the variable result.
If the input string is "plane", a Plane object should be stored in the variable result.
The Solution class's field result must be initialized in the static block by calling the reset method.

package com.codegym.task.task15.task1529; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* Mastering the static block */ public class Solution { public static void main(String[] args) { } static { try { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String value = br.readLine(); if (value.equalsIgnoreCase("helicopter")) { result = new Helicopter(); } else if (value.equalsIgnoreCase("plane")) { int passengers = Integer.parseInt(br.readLine()); result = new Plane(passengers); } br.close(); } catch (IOException e) { e.printStackTrace(); } reset(); } public static CanFly result; public static void reset() { result = null; } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

1 February 2019, 15:02

solution

I think that everything in the static block should be in the reset method. Inside the static block you should call reset.

Andrew

Level 29 , Seattle, United States

1 February 2019, 19:17

Thanks Guadalupe! You were right. I missed that one word in number 3.

Guadalupe Gagnon

Level 37 , Tampa, United States

1 February 2019, 19:19

You're welcome. Glad I could help.