the function that will put all string in lower case except the first character java code example

Example 1: init cap java

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

Example 2: how to uppercase the first letter of a string in java

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