Test.java

package com.godoro.object;

import java.util.StringTokenizer;


public class Test {
    
    private static String format(Student student){
        StringBuilder builder=new StringBuilder();
        builder.append(student.getStudentId()).append("|");
        builder.append(student.getStudentName()).append("|");
        builder.append(student.getAverageMark());
        return builder.toString();
    }
//    private static String format2(Student student){
//        return String.format("%d|%s|%4.2f", student.getStudentId(),
//                student.getStudentName(),student.getAverageMark());
//    }
    
    private static Student parse(String string){
        StringTokenizer tokenizer=new StringTokenizer(string,"|");
        long studentId=Long.parseLong(tokenizer.nextToken());
        String studentName=tokenizer.nextToken();
        double averageMark=Double.parseDouble(tokenizer.nextToken());
        return new Student(studentId,studentName,averageMark);
    }
//    private static Student parse2(String string){
//        String[] tokens=string.split("\\|");
//        long studentId=Long.parseLong(tokens[0]);
//        String studentName=tokens[1];
//        double averageMark=Double.parseDouble(tokens[2]);
//        return new Student(studentId,studentName,averageMark);
//    }
    public static void main(String[] args) {
        
        Student student=new Student(901,"Neşet Ertaş",3.3);
        String string=format(student);
        System.out.println("Katar "+string);
        Student student2=parse(string);
        System.out.println("Öğrenci "+student2.getStudentId()+" "
                +student2.getStudentName()+" "+student2.getAverageMark());
        
    }
}