Can you please help me out with these java questions and could you please comment out what each line does?. Thanks

1.

Code a method calledencryptto encrypt a String by swapping each pair of its adjacent characters.In the case of Strings with an odd number of characters pad them with a trailing space before encryption.

For example, "Hi there!" would be encrypted as "iHt eher !". You are not required to deal with an empty array.

2.

Code a method called compareArrays that takes two arrays of integers as parameters and returns a String. Use the following table to determine the value of the returned String: Condition Return value Arrays do not have the same number of "Arrays are of unequal length." elements Arrays have the same length but not all "Only n elements are identical." elements at the same index match Where n is the number of elements that match Arrays have same length and all "The arrays are identical." elements at the same index match