Write a java client that creates a symbol table mapping letter grades to numerical scores, as in the table below, then reads from standard input a list of letter grades and computes and prints the GPA (the average of the numbers corresponding to the grades) USING SYMBOL TABLES. IN JAVA PLZ

A+	A	A-	B+	B	B-	C+	C	C-	D+	D	D	F
4.35	4.00	3.65	3.35	3.00	2.65	2.35	2.00	1.65	1.35	1	.65	0.00