Write a Java program to concatenate three strings entered by the user and display the string formed in the output.

36. Write a JAVA program to input two strings from the user and print all the characters present in both strings. If any character is present more than once in both the strings, then print the character again.

(b) Assume a relation R on the set Z, and the ordered pairs of the form (a, b) e R if and only if a 2 6². Identify if the relation is reflexive, symmetric, antisymmetric. Explain as needed. argent please!