How to extract the first n characters from a string using Java?

To find the consonants in the given String compare every character in it using the charAt() method with the vowel letters and remaining are consonants.

Example

Live Demo

public class FindingConsonants {    public static void main(String args[]) {       String str = new String("Hi Welcome to Tutorialspoint");       for(int i=0; i<str.length(); i++) {          if(str.charAt(i) == 'a'|| str.charAt(i) == 'e'|| str.charAt(i) == 'i' ||             str.charAt(i) == 'o' || str.charAt(i) == 'u'|| str.charAt(i) == ' ') {          }else{             System.out.println("Given string contains "+str.charAt(i)+" at the index "+i);          }       }    } }

Output

Given string contains H at the index 0 Given string contains W at the index 3 Given string contains l at the index 5 Given string contains c at the index 6 Given string contains m at the index 8 Given string contains t at the index 11 Given string contains T at the index 14 Given string contains t at the index 16 Given string contains r at the index 18 Given string contains l at the index 21 Given string contains s at the index 22 Given string contains p at the index 23 Given string contains n at the index 26 Given string contains t at the index 27