i dont understand(((

[Andrey Chernov]

import java.util.Scanner;

public class java_lesson2 {
    public static void main(String[] args)  {
        System.out.print("кого ты хочешь посмотреть?");
        String n = p.nextLine();

        Scanner p = new Scanner(System.in);
        if (n != null && "room".equals(n) ) {
            System.out.print("room"); }
        if (n != null && "giraffe".equals(n) ) {
            System.out.println("giraffe");}
        if (n != null && "human".equals(n) ) {
            System.out.println("human");
        }


        public void room() {
        String name = "bedroom";
        int weight = 100000;
        int price = 50000;
        String color = "white";
        int height = 3;
    }

    public void giraffe() {
        String name = "Karl";
        int weight = 1500;
        int price = 500000;
        String color = "orange";
        int height = 6;
    }

    public void human() {
        String name = "Boby";
        int weight = 90;
        int price = 999999999;
        String color = "red";
        int height = 2;
    }
}}

[salvin francis]

Please use code tags ( <-- Its a link) to post your code. I have modified your post to include them. Doesn't it look better now ?

Can you share a bit about your question:
What is it that you don't understand in the above program ?

[Andrey Chernov]

salvin francis wrote:Please use code tags ( <-- Its a link) to post your code. I have modified your post to include them. Doesn't it look better now ?

Can you share a bit about your question:
What is it that you don't understand in the above program ?

This code should ask "who to show?"
and when entering: room, giraffe, person, must show the characteristic

[salvin francis]

And what happens when you compile it or run it ?
Hint1: One of your braces are at the wrong location. Hint 2: You are trying to use a variable before declaring it

[Andrey Chernov]

salvin francis wrote:And what happens when you compile it or run it ?
Hint1: One of your braces are at the wrong location. Hint 2: You are trying to use a variable before declaring it

import java.util.Scanner;

public class java_lesson2 {
    public static void main(String[] args)  {
        System.out.print("кого ты хочешь посмотреть?");
        String n = p.nextLine();

        public void room() {
            String name = "bedroom";
            int weight = 100000;
            int price = 50000;
            String color = "white";
            int height = 3;

        }

        public void giraffe() {
            String name = "Karl";
            int weight = 1500;
            int price = 500000;
            String color = "orange";
            int height = 6;
        }

        public void human() {
            String name = "Boby";
            int weight = 90;
            int price = 999999999;
            String color = "red";
            int height = 2;
        } {
        Scanner p = new Scanner(System.in);
        if (n != null && "room".equals(n) ) {
            System.out.print("room");
        }
        if (n != null && "giraffe".equals(n) ) {
            System.out.println("giraffe");
        }
        if (n != null && "human".equals(n) ) {
            System.out.println("human");
        }}

that's better?

[Campbell Ritchie]

Welcome to the Ranch

Andrey Chernov wrote:. . . that's better?

Afraid, no. Your additional { is in the wrong place and the code is now so poorly indented that we can't see what is happening. Please try your code whenever you alter anything. Please put every } to the left of what precedes it, and don't write two braces on the same line. If you indent your code correctly, you will be able to see its structure for yourself. Then you will see where the errors are. A text editor that supports bracket matching may help; if you are using Windows®, I would recommend NotePad++.

[salvin francis]

Adding to what Campbell said...
Have a look at the code below. I have added some comments to help you understand better.

class MyAwesomeClass{
	public static void main(String args[]) {
		//-- We can do this :
		MyAwesomeClass reference = new MyAwesomeClass();

		//-- Non static methods can be called using a reference:
		reference.thisIsAMethod();
		reference.thisIsAnotherMethod();

		//-- Static methods can be called without a reference:
		thisIsAStaticMethod();
		
		//-- We cannot declare a method within another method:
		/* 
		
		public void thisIsNotAllowed() {
			//-- some code
		}
		
		*/		
	}
	
	public void thisIsAMethod() {
		//-- some code
	}
	public void thisIsAnotherMethod() {
		//-- some code
	}
	public void thisIsAlsoAMethod() {
		//-- some code
	}
	
	public static void thisIsAStaticMethod() {
		//-- some code
	}
}

[Andrey Chernov]

import java.util.Scanner;

    class java_lesson2 {
        String name;
        int weight;
        int price;
        String color;
        int height;
        static int count = 0;

        public static void main(String[] args) {

            java_lesson2 room =new java_lesson2();

        room.name = "bedroom";
        room.weight = 100000;
        room.price = 5000000;
        room.color = "white";
        room.height = 3;
        count++;


        java_lesson2 giraffe =new java_lesson2();

        giraffe.name = "Karl";
        giraffe.weight = 1500;
        giraffe.price = 5000000;
        giraffe.color = "orange";
        giraffe.height = 6;
        count++;

        java_lesson2 human =new java_lesson2();

        human.name = "Boby";
        human.weight = 300;
        human.price = 9999999;
        human.color = "red";
        human.height = 2;
        count++;


                System.out.println("кого ты хочешь посмотреть?");
                Scanner p = new Scanner(System.in);
                String n = p.nextLine();

                if (n != null && "room".equals(n)) {
                    System.out.print("мы создали комнату - " + room.name + ",её грузоподъемность - " + room.weight + ".Примерная стоимость: " + room.price + ", её цвет: "+ room.color + ", метров в высоту:" +room.height);
                }
                if (n != null && "giraffe".equals(n)) {
                    System.out.print("мы создали жирафа по имени " + giraffe.name + ", его грузоподъёмность -" + giraffe.weight + ". Примерная стоимость:" + giraffe.price + ", его цвет: "+ giraffe.color + ", метров в высоту:" +giraffe.height);
                }
                if (n != null && "human".equals(n)) {
                    System.out.print("мы создали человека робота по имени: " + human.name + ", его грузоподъемность-" + human.weight + ". Примерная стоимость: " + human.price + ", его цвет: "+ human.color + ", метров в высоту:" +human.height);
                }
            }

    }

I did it!!!

[Campbell Ritchie]

Still not at all good, I am afraid.
If you write "room".equals(n), there is no need for the null test. That code can be relied upon never to throw a null pointer exception. It is also not possible for the Scanner#nextLine() method to return null.
Names like java_lesson2, n, and p are not at all good, because nobody can tell what they mean by looking at them. Only use _s in names of constants. Write something like InputDemo, and start class names with CapitalLetters please.
Make all the fields private and initialise them via a constructor. Always write a constructor because otherwise the compiler will add a default constructor, which might not do what you want.
Please indent your code consistently; lines 15‑39 are too far to the left and lines 42‑55 are too far to the right. Please divide those long lines (47, 50, and 53) into several shorter lines; they are very difficult to read.

[salvin francis]

It looks like now everything is just jammed into main method. We have a blog post about that. Main is Pain (<-- It's a link)
Your original idea of using methods looked better.

To make your code more user friendly, you could show a menu like this :

	
...
	private static Scanner KEYBOARD = new Scanner(System.in);
...
	public static void main(String... salvin) {
		System.out.println("Who do you want to see ?");
		System.out.println("1. A Room");
		System.out.println("2. A Giraffe");
		System.out.println("3. A Human");

		System.out.print("Your selection : ");
		String userInputText = KEYBOARD.nextLine();

Next, if you are learning about objects and inheritance, your code could be as simple as:

		Printable printable = Printable.from(userInputText);
		System.out.println("We've created a : " + printable.getInformationText());

Where "Printable" is your class.