Cannot find symbol

[Juhan Voolaid]

Hi

This is so basic problem, but I just can't solve it.

I have too classes:
1. main-class - Lab2.java
2. the other - Tree.java

Here are the source:

Lab2.java

import java.util.*;
 
class Lab2{
 
    private Tree tree;
 
    public static void main(String[] args){
        Lab2 l = new Lab2();
        l.initTree();
        l.printInfo();
    }
 
    public void initTree(){
        tree = new Tree(25, 30);
    }
 
    public void printInfo(){
        int p;
        p=tree.getPrice();
        System.out.println("Root size: "+p+".");
    }
}

and Tree.java

  
import java.util.*;
 
class Tree {
 
    private int price;
    private int weight;
    private ArrayList <Tree>children;
 
    Tree(){
        price=0;
        weight=0;
        children=new ArrayList <Tree>();
    }
 
    Tree(int price, int weight){
        this.price=price;
        this.weight=weight;
        children=new ArrayList <Tree>();
    }
 
    public void setPrice(int price){
        this.price=price;
    }
 
    public void setWeight(int weight){
        this.weight=weight;
    }
 
    public int getPrice(){
        return price;
    }
 
    public int getWeight(){
        return weight;
    }
}
 

And the error I got after I compile my program with a line: javac Lab2.java
I get:

 [B]
Lab2.java:19: cannot find symbol
symbol  : method getPrice()
location: class Tree
                p=tree.getPrice();
                      ^
1 error
[/B]

[Campbell Ritchie]

You don't need a declaration for int p, and the line with = separately.
You can write int p = tree.getPrice();
I actually tried condensing your code, so your method comes out as:

    public void printInfo(){
 
        System.out.printf("Root size: %d.", tree.getPrice());
 
    }

and it compiles and runs nicely.

CR

I have also reverted to your original code, and it compiles without any reported errors.
[ October 16, 2005: Message edited by: Campbell Ritchie ]

[Juhan Voolaid]

Ahh ... big thanx. I thought I was going crazy.