could i get help with a java code to run this program

Enter a long string: The quick brown fox jumped over the lazy dog Enter a substring: jumped Length of your string:- 44 Length of your substring: 6 Starting position of your substring: 20 String before your substring: The quick brown fox String after your substring: over the lazy dog Enter a position between 0 and 43: 18 The character at position 18 is x Enter a replacement string: leaped Your new string is: The quick brown fox leaped over the lazy dog Goodbye