string uppercase java code example

Example 1: capitalize string java

String str = "hello world!";

// capitalize first letter
String output = str.substring(0, 1).toUpperCase() + str.substring(1);

// print the string
System.out.println(output);
// Hello world!

Example 2: java uppercase

"Hello World".toUpperCase()

Example 3: uppercase java

string s="hello";
s = Character.toUpperCase(s.charAt(0)) + s.substring(1);
The output will be: Hello

Example 4: upper en java

public class Guru99 {   
    public static void main(String args[]) {       
        String S1 = new String("minúsculas convertidas en mayúsculas");       
 
        // Convertir a UpperCase    
        System.out.println(S1.toUpperCase());   
    }
}