JAVA

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!

uppercase string java

String var_name = "Jerry";
System.out.println(var_name.toUpperCase()); //JERRY

is upper in java

if (Character.isUpperCase(val)) {
   System.out.println("Character is in Uppercase!");
}else {
   System.out.println("Character is in Lowercase!");
}

uppercase java

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

capitalize string java

String str = "java";
String cap = str.substring(0, 1).toUpperCase() + str.substring(1);