Program reading Student Marks from file and Displays Who got Maximum Marks: =============================================================
This program will read student details from data.txt file, and displayas
the details of student who got maximum marks.
data.txt
101,Arun,90,95,89
102,Ram,96,50,56
103,Shekar,98,78,89
MaxMarks.java
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
public class MaxMarks {
public static void main(String[] args) throws Exception
{
List list=new ArrayList();
File f=new File("data.txt");
FileReader fr=new FileReader(f);
BufferedReader br=new BufferedReader(fr);
String str=null;
while((str=br.readLine())!=null){
StringTokenizer st=new StringTokenizer(str,",");
while(st.hasMoreTokens())
{
int sid=Integer.parseInt(st.nextToken());
String sname=st.nextToken();
double[] marks=new double[3];
marks[0]=Double.parseDouble(st.nextToken());
marks[1]=Double.parseDouble(st.nextToken());
marks[2]=Double.parseDouble(st.nextToken());
double totMarks=marks[0]+marks[1]+marks[2];
System.out.println(totMarks);
Student stu=new Student(sid, sname, marks, totMarks);
list.add(stu);
}
}
Student s1=list.get(0);
for(Student s2:list)
{
if(s1.getTotMarks() < s2.getTotMarks())
s1=s2;
}
System.out.println("Max Marks Obtained by");
System.out.println(s1);
}
}
Student.java
import java.util.Arrays;
public class Student {
int sid;
String sname;
double marks[];
double totMarks;
public Student() {
super();
}
public Student(int sid, String sname, double[] marks, double totMarks) {
super();
this.sid = sid;
this.sname = sname;
this.marks = marks;
this.totMarks = totMarks;
}
public int getSid() {
return sid;
}
public void setSid(int sid) {
this.sid = sid;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public double[] getMarks() {
return marks;
}
public void setMarks(double[] marks) {
this.marks = marks;
}
public double getTotMarks() {
return totMarks;
}
public void setTotMarks(double totMarks) {
this.totMarks = totMarks;
}
@Override
public String toString() {
return "sid=" + sid + ", sname=" + sname + " marks=" + Arrays.toString(marks) + ", totMarks=" + totMarks ;
}
}
This program will read student details from data.txt file, and displayas
the details of student who got maximum marks.
data.txt
101,Arun,90,95,89
102,Ram,96,50,56
103,Shekar,98,78,89
MaxMarks.java
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
public class MaxMarks {
public static void main(String[] args) throws Exception
{
List
File f=new File("data.txt");
FileReader fr=new FileReader(f);
BufferedReader br=new BufferedReader(fr);
String str=null;
while((str=br.readLine())!=null){
StringTokenizer st=new StringTokenizer(str,",");
while(st.hasMoreTokens())
{
int sid=Integer.parseInt(st.nextToken());
String sname=st.nextToken();
double[] marks=new double[3];
marks[0]=Double.parseDouble(st.nextToken());
marks[1]=Double.parseDouble(st.nextToken());
marks[2]=Double.parseDouble(st.nextToken());
double totMarks=marks[0]+marks[1]+marks[2];
System.out.println(totMarks);
Student stu=new Student(sid, sname, marks, totMarks);
list.add(stu);
}
}
Student s1=list.get(0);
for(Student s2:list)
{
if(s1.getTotMarks() < s2.getTotMarks())
s1=s2;
}
System.out.println("Max Marks Obtained by");
System.out.println(s1);
}
}
Student.java
import java.util.Arrays;
public class Student {
int sid;
String sname;
double marks[];
double totMarks;
public Student() {
super();
}
public Student(int sid, String sname, double[] marks, double totMarks) {
super();
this.sid = sid;
this.sname = sname;
this.marks = marks;
this.totMarks = totMarks;
}
public int getSid() {
return sid;
}
public void setSid(int sid) {
this.sid = sid;
}
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
public double[] getMarks() {
return marks;
}
public void setMarks(double[] marks) {
this.marks = marks;
}
public double getTotMarks() {
return totMarks;
}
public void setTotMarks(double totMarks) {
this.totMarks = totMarks;
}
@Override
public String toString() {
return "sid=" + sid + ", sname=" + sname + " marks=" + Arrays.toString(marks) + ", totMarks=" + totMarks ;
}
}