to upper case in java code example

Example 1: java uppercase

"Hello World".toUpperCase()

Example 2: uppercase java

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

Example 3: 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());   
    }
}

Example 4: java lower case to upper case

toUpperCase()

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Java Example