Question

How to extract lowercase characters from a string in Java

Answer 1

public class MyClass {
    public static String extract_lowercase(String s) { 
         int len = s.length(); 
         String lower_s = "";
       
         for (int i = 0; i < len; i++) { 
             if ((s.charAt(i)) >= 97 && s.charAt(i) <= 122) 
                 lower_s = lower_s + s.charAt(i); 
         } 
 
         return lower_s;
    } 
    public static void main(String args[]) {
        String s = "jaJvAVaA"; 
   
        String lc = extract_lowercase(s);
        
        System.out.println(lc); 
    }
}
 
 
 
/*
run:
 
java
 
*/

 

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