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Java program Vowels and Consonants splitter - switch case char

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The java code splits a string into two string object containing vowels and consonants character.On executing the code, an input has a string and it is converted into array of char. and then each character is passed into switch case to check whether it is a vowel or consonant and stored into a string object separately. 



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class SwitchCase {

 public static void main(String[] args) throws IOException 
{
  
 InputStreamReader dis =new InputStreamReader ( System.in );
 BufferedReader br =new BufferedReader(dis);
  
 String tstr ="Enter a string sentence to split
                                            vowels and consonants";
 System.out.println(tstr);
  
     String  arg1 =br.readLine();     
     char carr[]= arg1.toLowerCase().toCharArray();
     
     StringBuffer vowels=new StringBuffer();
     StringBuffer consnt=new StringBuffer();
     
     for (int n=0;n<carr.length;n++) 
     { 
          switch ( carr[n] ) {
              case 'a':
               vowels.append(carr[n]);
               break;
              case 'e':
               vowels.append(carr[n]);
               break;
              case 'i':
               vowels.append(carr[n]);
               break;
              case 'o':
               vowels.append(carr[n]);
               break;
              case 'u':
               vowels.append(carr[n]);
               break;
             default :
              consnt.append(carr[n]);
              
          }
     }
     
  System.out.println("nVowels chars :" + vowels);
  System.out.println("Consonant chars :" + consnt);
 }

}

Output
Enter a string sentence to separate vowels and consonants

java hello world

Vowels chars :aaeoo
Consonant chars :jv hll wrld




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