exception.java

import java.util.Scanner;

class Stringdemo{
    String st;
    int num,changedNum;
    void setNum(int n)throws exception
    {
        if(n<0){
            throw "number is lesser than 0";
        }
        num=n;
    }
    void setString(String str)throws exception
    {
        if(str.length<10){
            throw "Invalid string length must be greater than 10";
        }
        st=str;
    }

    void changeNum(String n)throws NumberFormatException
    {
        changedNum=Integer.parseInt(n);
    }
    void show(){
        System.out.println("Number:"+num+"\nString:"+st+"\nConverted-number:"+changedNum);
    }
}

public class exception{
    public static void main(){
        Scanner sc = new scanner(System.in);
        Stringdemo ob = new Stringdemo();
        try{
            System.out.print("Enter a number:");
            int num = sc.nextInt();

            System.out.print("Enter a string:");
            String st = sc.nextLine();

            System.out.print("Enter a number-string:");
            st = sc.nextLine();
        }
    }
}