how to modify string’s case
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This example shows how to change case of whole string:
public void testModifyCase (){
String lowerCaseString = "how to modify string case?";
String upperCaseString = lowerCaseString.toUpperCase();
System.out.println(upperCaseString);
//output: HOW TO MODIFY STRING CASE?
lowerCaseString = null;
lowerCaseString = upperCaseString.toLowerCase();
System.out.println(lowerCaseString);
//output: how to modify string case?
}
And this one just capitalize first letter:
public void testCapitalizeFirstLetter(){
String lowerCaseString = "how to capitalize first letter?";
StringBuilder builder = new StringBuilder();
builder.append(Character.toUpperCase(lowerCaseString.charAt(0))).append(lowerCaseString.substring(1));
String stringWithCapitalizedFirstLetter = builder.toString();
System.out.println(stringWithCapitalizedFirstLetter);
//output: How to capitalize first letter?
}