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POArrayList and methods for java
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  1. POArrayList and methods for java
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    copied!<p>I have been working on this for hours so I hope someone can help me. I have to create an arraylist of students and do the following commands. add, find and delete students. Anyways my add, find functions work ok, but when I try to delete students it brings up the wrong student! I dont' know what to do feels like I have tried everything.</p> <pre><code>public void addStudent(String studentName, long studentID, String address) { Student newStudent = new Student ( studentName, studentID, address); collegeList.add(newStudent); } public static void deleteStudent() { Scanner input=new Scanner(System.in); System.out.print("Enter student ID"); long studentNumber=input.nextLong(); if(directory.isValidID(studentNumber) &amp;&amp; directory. withinRange(studentNumber)) { System.out.print("Deleting Student"); System.out.print(directory.findStudent(studentNumber)); System.out.print("please confirm with y/n"); Scanner myans=new Scanner(System.in); String confirmation=myans.next(); if (confirmation.equals("y")) { directory.deleteStudent(studentNumber); System.out.print("student deleted"); } if(confirmation.equals("n")) { System.exit(0); } } } /** Searches for student based upon their student number @param studentID unique student number for each student @return students entire information */ public String findStudent(long studentID) { String str; Student newStu; for (int i=0; i&lt;collegeList.size(); i++ ) { newStu=collegeList.get(i); if(newStu.getStudentID()==studentID); return newStu.toString(); } return null; } /** Removing student from collegeList @param studentID unique student number @return none */ public void deleteStudent (long studentID) { Student newStu; for (int i=0; i&lt;collegeList.size(); i++ ) { newStu=collegeList.get(i); if (newStu.getStudentID()==studentID) collegeList.remove(i); } } </code></pre>
 

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