java - Issue with if statment -

im trying make if statement when r1 , num equal prints r1 wont print. asks product number , when enter nothing prints. main way @ end. please show me im doing wrong?

import java.io.*; import java.util.*; import java.lang.*; import java.text.*;  public class producttype implements comparable<producttype> {     private string partnum;   private double price;   private int stock;   public producttype (string partnum, double price , int stock ){      this.partnum = partnum;        this.price = price ;        this.stock = stock ;     }  public producttype(){ partnum = "" ; price = 0; stock = 0;  } public void setnum(string partnum) {this.partnum = partnum;}  public void setprice(double price) {this.price = price ;}  public void setstock(int stock) {this.stock = stock ;}  public string getnum() {return partnum;}  public double getprice() {return price;}  public int getstock() {return stock;}  public int compareto(producttype othertype) {  int temp = (this.getnum().compareto(othertype.getnum()));     return temp; }  //object1.compareto(object2); //(function).compareto.function2; public string tostring()   {     string result = "" + partnum +  " price" + price + "stock" + stock;     return result;   }   public static void main(string[] args)   {      producttype r1 = new producttype("1422", 1.00, 2);     producttype r2 =  new producttype("8535", 2.00, 3);  scanner in = new scanner(system.in); system.out.print("enter product number: ");     string num = in.nextline();  if ( r1.equals(num))     system.out.print(r1);   }  } 

r1 instance of producttype , num string. never equal.

you check r1 instance's num value num string.

if ( r1.getnum().equals(num))     system.out.print(r1);