Question

How to uppercase specific character of a string in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String s = "java";
        
        char[] arr = s.toCharArray();

        int N = 2;
        arr[N] = Character.toUpperCase(arr[N]);
        
        s = new String(arr);

        System.out.println(s);
    }
}



/*
run:

jaVa

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        String s = "java";
        int N = 2;

        s = s.substring(0, N) + s.substring(N, N + 1).toUpperCase() + s.substring(N + 1);

        System.out.println(s);
    }
}



/*
run:

jaVa

*/

 

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