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Student.java
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Student.java
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/*
Create a Java class called Studentwith the following details as variables within it.
1
A
(i) USN
(ii) Name
(iii) Branch
(iv) Phone
Write a Java program to create nStudent objects and print the USN, Name, Branch, and
Phoneof these objects with suitable headings.
*/
import java.util.*;
import java.io.*;
class Student
{
//Class members needed by the object are declared outside methods.
String usn,name,br,ph;
public static void main(String args[])
{
int n;//Stores no of students
Scanner s=new Scanner(System.in);
//Input the number of students
System.out.println("Enter the no of students");
n=s.nextInt();
//First create an array of objects of size 'n'
//****NOTE: creating arr of obj will not allocated memory for each obj,this needs to be done to individual elements
Student stu[]=new Student[n];
for(int i=0;i<n;i++)
{
stu[i]=new Student();//The obj arr element is allocated memory and then the read_info() is called
stu[i].read_info(n);
}
//Display all stored records
System.out.println("\n\n\nALL RECORDS\n\n\n");
for(int i=0;i<n;i++)
{
stu[i].display_info(n);
}
}
void read_info(int n)
{
//this._member_ referes to the data member of the current object i.e stu[i] when this fn is called from the loop above.
Scanner s=new Scanner(System.in);
System.out.println("Enter name:");
this.name=s.nextLine();
System.out.println("Enter usn:");
this.usn=s.nextLine();
System.out.println("Enter branch:");
this.br=s.nextLine();
System.out.println("Enter Oh no:");
this.ph=s.nextLine();
}
void display_info(int n)
{ //Similarly this._member_ is used to refer to it when we are accessing the data members within the display loop
for(int i=0;i<n;i++)
{ System.out.println("=================================================");
System.out.println("Name --> "+this.name);
System.out.println("usn --> "+this.usn);
System.out.println("branch --> "+this.br);
System.out.println("ph no --> "+this.ph);
System.out.println("=================================================");
}
}
}