with explanation please! thank you

What is the output of this Java program? class Driver \{ public static void main(String[ args) \{ foo(4); bar(4); static void foo(int a) \{ System. out.print (a); static void bar(int a) \{ foo(a + 1); System.out.print(a); Question 13 What is the output of this Java program? class Driver \{ public static void main(String [ args) \{ int a= foo (6); int b=bar(a); \} static int foo(int a){ a=bar(a3); System.out.print(a); return a; \} static int bar(int a){ a=a1; System.out.print(a); return a+2; \}