What happens if the start index is greater than the end index in a string slice?

Which string method is used to convert a string to lowercase?

Which string method is used to find the index of the first occurrence of a substring within a string?

What is the output of the following code?

String str = "Hello";
System.out.println(str.replace("l", "L"));

Which method is used to check if a string contains a specified sequence of characters?

What is the output of the following code?

String str = " Hello ";
System.out.println(str.trim());

What is the output of the following code?

String str = "Hello World!";
System.out.println(str.substring(6, 11));

Which string method is used to find the index of a substring within a string?

What is the result of a string slice operation?

What is the purpose of the join() method in Python?

Which method is used to find the index of a specified character within a string?

Which string method is used to check if a string starts with a specified prefix?

Which string method is used to find the index of a specific character in a string?

Which of the following statements is true about the 'replace' method?

What is the result of the expression "Hello".length()?