Java

package sms;


import java.util.Arrays;
import java.util.Scanner;
class done
{

String astring;
int m=0;
String buffer[];
String temp1[];
int temp2[];
int b = 0;
char val2[]={'a','b','c'};
char val3[]={'d','e','f'};
char val4[]={'g','h','i'};
char val5[]={'j','k','l'};
char val6[]={'m','n','o'};
char val7[]={'p','q','r','s'};
char val8[]={'t','u','v'};
char val9[]={'w','x','y','z'};
 
Scanner in=new Scanner(System.in);
@SuppressWarnings("empty-statement")
void fun()
{
System.out.println("Enter the number of strings");
int num=in.nextInt();
System.out.println("enter the strings");
for(int k=0;k<=num;k++)
{
  
   astring =in.nextLine();
   b=astring.length();
   char c;
     for(int i=0;i<b;i++)
       {
           c=astring.charAt(i);
           if((c==val2[0])||(c==val2[1])||(c==val2[2]))
             { 
                 System.out.print("2");
                 temp1[i] =("2");
             } 
else if((c==val3[0])||(c==val3[1])||(c==val3[2]))
        {
            System.out.print("3");
            temp1[i] =("3");
        }
else if((c==val4[0])||(c==val4[1])||(c==val4[2]))
        {
            System.out.print("4");
            temp1[i] =("4");
        }
else if((c==val5[0])||(c==val5[1])||(c==val5[2]))
        {
            System.out.print("5");
            temp1[i] =("5");
        }
else if((c==val6[0])||(c==val6[1])||(c==val6[2]))
        {
            System.out.print("6");
            temp1[i] =("6");
        }
else if((c==val7[0])||(c==val7[1])||(c==val7[2])||(c==val7[3]))
        {
            System.out.print("7");
            temp1[i] =("7");
        }
else if((c==val8[0])||(c==val8[1])||(c==val8[2]))
        {
            System.out.print("8");
            temp1[i] =("8");
        }
else if((c==val9[0])||(c==val9[1])||(c==val9[2])||(c==val9[3]))
        {
            System.out.print("9");
            temp1[i] ="9";
        }
}
     temp2[k]=Integer.parseInt(temp1[k]);
    
}
}
}

class SMS
       {
           public static void main(String args[])
           {
               done obj;
               obj = new done();
               obj.fun();
           }                      
}