please help

Problem Suppose that s1, s2, s3, and s4 are four strings, given as follows String s1 "Welcome to Java" String s2 s1,String s3- new String("Welcome to Java") String What are the results of the following expressions? a. s1 == s2 b, s1-s3 d s1 equals(s3) e. s1 equals(s4) f. "Welcome to Java" replace("Java" "HTML") g s1 replace('o' T) T) Problem ur strings, given as follows 2 = s1; String s3 = new String("Welcome to Java"); String s4-welcome to Java pressions? ", ", "HTML