Question

How to get the first N characters of a string in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String s = "java programming";

        int N = 3;
        
        System.out.println(s.substring(0, N));

    }
}




/*
run:

jav

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        String s = "java programming";
 
        int N = 3;
        
        String sub = s.substring(0, Math.min(s.length(), N));
         
        System.out.println(sub);
 
    }
}
 
 
 
 
/*
run:
 
jav
 
*/

 

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Answer 3

public class MyClass {
    public static String get_first_n_chars(String s, int pos) {
        return s.substring(0, pos);       
    }
    public static void main(String args[]) {
        String s = "java programming";
        int pos = 3;
          
        System.out.println(get_first_n_chars(s, pos));
    }
}
 
  
  
/*
run:
  
jav
  
*/

 

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