Question

Write a Java program that reads a series of strings from a user until STOP is entered. Each input consists of information about one student at the ABC Professional School. The input consists of the student’s last name (the first 15 characters with extra blanks on the right if the name is not 15 characters long), the student’s number (the next 4 characters, all digits, a number between 1000 and 5999), and the student’s program of study (one character, either B for Business, C for Computing, L for Law, N for Nursing or T for Tourism). This information must be read in as one string, and broken into the individual pieces. As the code tries to break the string into its parts, exceptions may be thrown. Some are Java exceptions (which ones?) and some are programmer created exceptions (which ones?) Catch these in main and print out a description of the problem encountered. Be specific. For example rather than outputting, “invalid student number” state that “6789 is an invalid student number”. Input a series of these strings, so that all possible exceptions are tested, then input STOP when you are done.

Answer 1

Code:

import java.util.Scanner;
public class MyClass {
public static void main(String args[]) {
  
Scanner sc=new Scanner(System.in);
String inp,num;
char programm;
while(true){
inp=sc.nextLine();
if(inp.equals("STOP")==true){
break;
}
if(inp.length()==20){
if(inp.charAt(14)==' '){
System.out.println("Name : "+inp.substring(0,14));
}
else{
System.out.println("Name : "+inp.substring(0,15));
}
num=inp.substring(15,19);
try{
int num1=Integer.parseInt(num);
if(num1>=1000 && num1<=6000){
System.out.println("Number : "+num);
}
else{
System.out.println(num + "is an invalid student number");
continue;
}
}
catch(Exception e){
System.out.println(num+"is an invalid student(not an integer) number");
continue;
}
programm=inp.charAt(19);
if(programm=='B'){
System.out.println("Programm : Business");
}
else if(programm=='C'){
System.out.println("Programm : Computing");
}
else if(programm=='L'){
System.out.println("Programm : Law");
}
else if(programm=='N'){
System.out.println("Programm : Nursing");
}
else if(programm=='T'){
System.out.println("Programm : Tourism");
}
else{
System.out.println("Invalid Programm");
}
}
else{
String split[]=inp.split(" ");
if(split.length==2){
System.out.println("Name : "+split[0]);
if(split[1].length()==5){
num=inp.substring(0,5);
try{
int num1=Integer.parseInt(num);
if(num1>=1000 && num1<=6000){
System.out.println("Number : "+num);
}
else{
System.out.println(num + "is an invalid student number");
continue;
}
}
catch(Exception e){
System.out.println(num+"is an invalid student(not an integer) number");
continue;
}
programm=inp.charAt(5);
if(programm=='B'){
System.out.println("Programm : Business");
}
else if(programm=='C'){
System.out.println("Programm : Computing");
}
else if(programm=='L'){
System.out.println("Programm : Law");
}
else if(programm=='N'){
System.out.println("Programm : Nursing");
}
else if(programm=='T'){
System.out.println("Programm : Tourism");
}
else{
System.out.println("Invalid Programm");
}   
}
else{
System.out.println("Invalid Input");   
}
}
else{
System.out.println("Invalid Input");
}
}
}
  
}
}

Output: