String methods in Java

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Across
  1. 3. Method to convert the characters of a string into upper case
  2. 5. Method to append a string to the end of another string
  3. 7. Method to split a string into an array of substrings
  4. 10. Method to compare two strings, ignoring case considerations
  5. 11. Method that returns the character at the specified index (position)
  6. 12. Method to check whether a string contains a sequence
  7. 13. Method that returns the position of the first found occurrence of specified characters in a string
Down
  1. 1. Method that returns the position of the last found occurrence of specified characters in a string
  2. 2. Method to convert the characters of a string into lower case
  3. 3. Method to remove white spaces from both ends of a string
  4. 4. Method to check whether a string ends with specified characters
  5. 6. Method to check whether a string starts with specified characters
  6. 8. Method to find the length of a string
  7. 9. Method to extract a substring from the original string
  8. 14. Method to compare two strings