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POMy ArrayList only contains the last item on my array
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  1. POMy ArrayList only contains the last item on my array
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    copied!<pre><code>public static void main(String args[]){ new Converter(); //the converter() method reads a csv file that pass it to an array of String // called stringList; where in stringList is a static variable; ArrayList&lt;Student&gt; list = new ArrayList&lt;Student&gt;(5); String p[] = null; Student stud = null; for(int z = 0; z &lt; stringList.length; z++){ p = stringList[z].split(","); id = Integer.parseInt(p[0]); yr = Integer.parseInt(p[5]); fname = p[1]; gname = p[2]; mname = p[3].charAt(0); course = p[4]; stud = new Student(id,yr,fname,gname,mname,course); studs = stud; </code></pre> <p>I tried to display the current values of the variables above and compare them to the student object</p> <pre><code> System.out.println(id +" "+ yr +" "+ fname + " "+gname + " "+mname + " "+course +" should be the same with : " +stud.toString()); list.add(studs); // add the student object to the list } //end of the for loop </code></pre> <p>Then I noticed my Arraylist only displays only one value:</p> <pre><code> for (int c = 0; c&lt;list.size(); c++){ System.out.println(" @list "+c+": "+list.get(c)); } } // end of main method </code></pre> <p>Normally I would read 100+ items but with this example I made it only 5; this is the out put of the program;</p> <pre><code> 2123259 1 AVILA JEREMY RAYMUND T BSIT should be the same with : 2123259,AVILA,JEREMY RAYMUND,T,BSIT,1 2124919 1 BEROÑA MAYNARD W BSIT should be the same with : 2124919,BEROÑA,MAYNARD,W,BSIT,1 2124679 1 CABRERA JERSON RHOD D BSIT should be the same with : 2124679,CABRERA,JERSON RHOD,D,BSIT,1 2124905 1 CABRILLAS ARMANDO JR. B BSIT should be the same with : 2124905,CABRILLAS,ARMANDO JR.,B,BSIT,1 2123400 1 CARIÑO JVANZ S BSIT should be the same with : 2123400,CARIÑO,JVANZ,S,BSIT,1 @list 0: 2123400,CARIÑO,JVANZ,S,BSIT,1 @list 1: 2123400,CARIÑO,JVANZ,S,BSIT,1 @list 2: 2123400,CARIÑO,JVANZ,S,BSIT,1 @list 3: 2123400,CARIÑO,JVANZ,S,BSIT,1 @list 4: 2123400,CARIÑO,JVANZ,S,BSIT,1 </code></pre> <p>Now my problem here ladies and gentlemen is that I tried to display the Stud object inorder to check if its reading the correct values and indeed it displays it correctly, and then after assigning values to it , I then add it to the list. but something confuses me , and I couldnt figure out why my list only contains the last item in my array? please help me, I've been stuck for 2 nights.</p> <p>this my whole code , I focus on the main</p> <p>public class Converter {</p> <pre><code> private static ArrayList&lt;Student&gt; students; private static String[] stringList; private static Scanner fr; private static int size; private static int id; private static int yr; private static String fname; private static String gname; private static char mname; private static String course; public static void main(String args[]){ ArrayList&lt;Student&gt; list = new ArrayList&lt;Student&gt;(5); new Converter(); String p[] = null; Student stud = null; students = new ArrayList&lt;Student&gt;(stringList.length); for(int z = 0; z &lt; stringList.length; z++){ p = stringList[z].split(","); id = Integer.parseInt(p[0]); yr = Integer.parseInt(p[5]); fname = p[1]; gname = p[2]; mname = p[3].charAt(0); course = p[4]; stud = new Student(id,yr,fname,gname,mname,course); System.out.println(id +" "+ yr +" "+ fname + " "+gname + " "+mname + " "+course +" should be the same with : " +stud.toString()); list.add(stud); } // end of for loop for (int c = 0; c&lt;list.size(); c++){ System.out.println(" @list "+c+": "+list.get(c)); } // end of second loop }// end of main public Converter(){ readStudtentsCSV(); id = 0; yr = 0; fname = ""; gname = ""; mname = ' '; course = ""; } public static void readStudtentsCSV() { int s = 0; try { size = countLines("test.csv"); stringList = new String[size]; fr = new Scanner(new File("test.csv")); } catch(Exception e){ e.printStackTrace(); } while (fr.hasNextLine()){ stringList[s] = fr.nextLine(); //System.out.println(stringList[s]); s++; } } public static int countLines(String eFile) throws Exception{ Scanner fScan = new Scanner(new File(eFile)); int count =0; while (fScan.hasNextLine()){ count += 1; String line = fScan.nextLine(); } fScan.close(); return count; } </code></pre> <p>}</p>
 

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