Created
June 23, 2021 05:15
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Nonprimitive_data_type_array
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| import java.util.Scanner; | |
| public class StudentArray { | |
| Scanner sc = new Scanner(System.in); | |
| int rollno; | |
| String name; | |
| public StudentArray(int rollno, String name) { | |
| this.rollno = rollno; | |
| this.name = name; | |
| } | |
| StudentArray studentArray [] = new StudentArray[1]; | |
| public StudentArray(){}; | |
| public int getRollno() { | |
| return rollno; | |
| } | |
| public void setRollno(int rollno) { | |
| this.rollno = rollno; | |
| } | |
| public String getName() { | |
| return name; | |
| } | |
| public void setName(String name) { | |
| this.name = name; | |
| } | |
| public void insert (String name,int rollno,int position) { | |
| studentArray[position -1]=new StudentArray(rollno,name); | |
| } | |
| //} | |
| public void traverse() { | |
| try { | |
| for (int i = 0; i < studentArray.length; i++) { | |
| System.out.println(studentArray[i].getName() + " " + studentArray[i].getRollno()); | |
| } | |
| } catch(NullPointerException e) { | |
| System.out.println("No value in the array"); | |
| } | |
| } | |
| public void deleteindex(int index){ | |
| studentArray[index].setRollno(Integer.MAX_VALUE); | |
| studentArray[index].setName(null); | |
| } | |
| } |
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