Common Java String methods ( AI Generated)

 Here's a list of common String methods and functions in Java programming:

1. length(): Returns the length of the string

2. charAt(int index): Returns the character at the specified index

3. substring(int beginIndex): Returns a substring from the specified index to the end

4. substring(int beginIndex, int endIndex): Returns a substring from beginIndex to endIndex-1

5. toLowerCase(): Converts the string to lowercase

6. toUpperCase(): Converts the string to uppercase

7. trim(): Removes leading and trailing whitespace

8. replace(char oldChar, char newChar): Replaces all occurrences of oldChar with newChar

9. replaceAll(String regex, String replacement): Replaces all substrings matching the regex

10. split(String regex): Splits the string around matches of the given regex

11. contains(CharSequence sequence): Checks if the string contains the specified sequence

12. startsWith(String prefix): Checks if the string starts with the specified prefix

13. endsWith(String suffix): Checks if the string ends with the specified suffix

14. equals(Object obj): Compares the string with another object for equality

15. equalsIgnoreCase(String anotherString): Compares strings, ignoring case

16. compareTo(String anotherString): Compares two strings lexicographically

17. indexOf(String str): Returns the index of the first occurrence of str

18. lastIndexOf(String str): Returns the index of the last occurrence of str

19. concat(String str): Concatenates the specified string to the end of this string

20. isEmpty(): Checks if the string is empty

21. valueOf(various types): Returns the string representation of the argument

These methods provide a wide range of functionality for manipulating and working with strings in Java.

public class StringExample {

    public static void main(String[] args) {

        String str = "Hello World";

        System.out.println("Length: " + str.length()); // Output: 11

        System.out.println("Character at index 0: " + str.charAt(0)); // Output: H

        System.out.println("Substring from index 6: " + str.substring(6)); // Output: World

        System.out.println("Substring from index 0 to 5: " + str.substring(0, 5)); // Output: Hello

        System.out.println("Concatenation: " + str.concat("!")); // Output: Hello World!

        System Engineering.out.println("Replace 'o' with 'a': " + str.replace('o', 'a')); // Output: Hella Warld

        System.out.println("Uppercase: " + str.toUpperCase()); // Output: HELLO WORLD

        System.out.println("Lowercase: " + str.toLowerCase()); // Output: hello world

        System.out.println("Contains 'World': " + str.contains("World")); // Output: true

        System.out.println("Equals 'Hello World': " + str.equals("Hello World")); // Output: true

        System.out.println("Index of 'World': " + str.indexOf("World")); // Output: 6

    }

}

Citations:

[1] https://www.w3schools.com/java/java_ref_string.asp

[2] https://javaconceptoftheday.com/java-new-string-methods-with-examples/

[3] https://www.javatpoint.com/methods-of-string-class

[4] http://cs111.wellesley.edu/~cs111/archive/cs111_fall06/public_html/labs/lab9/lab9.html

[5] https://docs.oracle.com/javase/8/docs/api/java/lang/String.html

[6] https://docs.oracle.com/javase/10/docs/api/java/lang/String.html

[7] https://www.geeksforgeeks.org/string-class-in-java/

[8] https://www.programiz.com/java-programming/string

(Generated using the perplexity ai )