Instead of reading from explicitly declared String, gawin natin read from a TEXT file.
(Pareho din ang laman ng text file. Make sure to save this text into a text file and name it "studentslist.txt"...no space, just one straight continuous line of text)
SAVE THIS AS studentslist.txt
SAVE THIS AS MainApp2.java
(Pareho din ang laman ng text file. Make sure to save this text into a text file and name it "studentslist.txt"...no space, just one straight continuous line of text)
SAVE THIS AS studentslist.txt
Code:
Antonio|Dimaculangan|BS Nursing|3rd year|University of the Philippines##Jose|Hipolito|BS Civil Engineering|2nd Year|Adamson University##Maria|Capra|BS Accountancy|5th Year|University of Santo Tomas##Leo|Ramirez|Hotel and Restaurant Management|1st Year|STI College##Alan|Montelibano|Computer Science|4th Year|AMASAVE THIS AS MainApp2.java
Code:
/**
* Part 2 of series
* Reading it from file
* Katulad din ng Series #1, but this time from a text file
* Very minor change
*
* Author: Codyscott at phcorner.net
*
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
public class MainApp2 {
static File file = new File("studentslist.txt");
static String longList = null;
static BufferedReader reader = null;
static ArrayList<String> studentRecords = new ArrayList<String>();
public static void main(String[] args) {
//STEPS 0: siguraduhin lang natin na file exist and if it does, gawa lang tayo ng longList
//gaya ng series 1 (not necessarily pero just demonstration purposes)
try {
reader = new BufferedReader(new FileReader(file));
String aVeryLongString;
while((aVeryLongString=reader.readLine()) != null) {
longList = aVeryLongString;
}
}catch(Exception e) {
System.out.println("File not found.");
}
//STEP 1: display lang natin yung longList as is
System.out.println(longList + "\n\n");
//STEP 2: Let's split between ## to make records (or in database, rows)
String[] studentRecords = longList.split("##");
//STEP 3: Let's just verify
//3a - bilangan kung ilang records
System.out.println("TOTAL RECORDS: " + studentRecords.length + "\n\n");
//3b - display natin isa isa yung records
int count = 0;
for(String aRecord : studentRecords) {
count++;
System.out.println(count + " : " + aRecord);
}
//********ok pagandahin pa natin ng konti
//STEP 4: Let's split PER RECORD into fields
//Let's loop inside the studentRecords
int counter=0;
for(String aRecord : studentRecords) {
//split between "|"
//take note: you need to escape using "\\|"
String[] oneStudentArray = aRecord.split("\\|");
System.out.println("\n" + ++counter);
//step 4a: kada isang record, i-display natin
for(String aField : oneStudentArray) {
System.out.println(aField);
}
}
/*at this point, we could have created a STUDENT OBJECT with this data
and store it direct to a database.
But for now, just know the basics
*/
}
}