title: How to convert integer YYYYmmDD into YYYY/mm/DD in java
body: <p>I am trying to process the data from a weather station. I simply want to process and print (for now) the minimum and maximum temperatures each day starting from 2000/01/01 until today 2019/12/12. The weather station gives me the date in an integer yyyymmdd like 20191212 or 20030317. I store this, alongside the minimum and maximum temperatures in an integer array, of about 21000 rows long... I want the date to be displayed in yyyy/mm/dd, like 2019/12/12 or 2003/03/17. How exactly do I go about doing this?</p>
  
  <p>This is my code</p>
  
  <pre><code>import java.io.*;
  
  public class Main {
      public static void main(String args[]) {
          int rowAmount = 7152;   //the amount of rows in the document
          int[] temperatures = new int[rowAmount*3];  //makes an array 3 times the size of rowAmount, to fit date, min temp and max temp.
          try {   
              BufferedReader br = new BufferedReader(new FileReader("D:\\20002019minmaxtempbilt.txt")); // Makes the filereader
  
              String fileRead = br.readLine(); // reads first like
              int counter = 0;    //sets a counter
              while (fileRead != null) { // loops until the file ends.
                  String[] tokenize = fileRead.split(","); //splits the line in 3 segements, date, min temp and max temp. And stores them in following variables
                  int tempDate = Integer.parseInt(tokenize[0]);
                  int tempMin = Integer.parseInt(tokenize[1]);
                  int tempMax = Integer.parseInt(tokenize[2]);
                  //adds the values to the array
                  temperatures[counter] = tempDate;
                  counter++;
                  temperatures[counter] = tempMin;
                  counter++;
                  temperatures[counter] = tempMax;
              }
              // close file stream
              br.close();
          }
          catch (FileNotFoundException fnfe)
          {
              System.out.println("file not found");
          }
  
          catch (IOException ioe)
          {
              ioe.printStackTrace();
          }
  
          // Displays the entire array, formatted by date neatly, hopefully.
  
          for(int i = 0; i&lt;rowAmount; i =+ 3) {
              int tempDate = temperatures[i];
              int tempMin = temperatures[i+1];
              int tempMax = temperatures[i+2];
              drawLine(tempDate, tempMin, tempMax);
          }
  
  
      }
  
      public static void drawLine(int tempDate, int tempMin, int tempMax) {
          /*This is where I get stuck. I need to convert tempDate from an int yyyymmdd to either
            3 separate integers representing year, month and day; or I need to convert it to a 
            string that can be printed out yyyy/mm/dd.*/
  
          System.out.printf("");
  
      }
  }
  </code></pre>