oop 3. praks 2016-02-16

Scratch.java

import java.util.Scanner;

class Scratch {

  public static void main(String[] args) {

    Node n1 = new Node(1);
    n1.add(2);
    n1.add(3);
    n1.add(4);

    Node.superValue = 1; // eiii

    // class Rectangle
    // pikkus, laius
    // pindala, ümbermõõt
    // scale(double) -> new Rectangle

    int a = 42;
    int b = a; // b 42
    b = 0; // a 42

    int[] x = { 42 };
    int[] y = x; // y { 42 }
//    y[0] = 0; // x { 0 }
//    y = new int[]{ 0 }; // x { 42 }

    int[] i1 = {10};
    int[] i2 = {20};
    swapFirst(i1, i2);

    Math.min(1, 2);


    java.util.Scanner scanner = new Scanner(System.in);
    System.out.println("kirjuta midagi:");
    String s = scanner.nextLine();
    System.out.println(s);
    System.out.println("kirjuta midagi veel:");
    String s2 = scanner.nextLine();
    System.out.println(s2);
  }

  static void swapFirst(int[] a, int[] b) {
    int tmp = a[0];
    a[0] = b[0];
    b[0] = tmp;
  }

}

// eraldi failis Node.java
public class Node {

  private final int value;

  static int superValue = 42; // non-final static muutujad on saatanast

  Node next;

  Node(int value) {
    this.value = value;
    superValue = 3; // eiiiii
  }

  void add(int nextValue) {
    if (next == null) {
      next = new Node(nextValue);
    } else {
      next.add(nextValue);
    }
  }

  public String toString() {
    return "node, value=" + value;
  }

}