Chapter 4.4, Problem 4.4.1CP

Suppose s1, s2, and s3 are three strings, given as follows:

String s1 = "Welcome to Java";

String s2 = "Programming is fun";

String s3 = "Welcome to Java";

What are the results of the following expressions?

(a) s 1 == s2

(b) s2 == s3

(c) s1 .equals(s2)

(d) s2.equals(s3)

(e) s1 .compareTo(s2)

(f) s2.compareTo(s3)

(g) s2. compareTo(s2)

(h) s1. charAt (0)

(i) s1. indexOf (' j ')

(j) s1.indexOf("to")

(k) s1. last IndexOf ('a')

(1) s1 .1 astlndexOf ("o" , 15)

(m) s1.1ength()

(n) s1 .substring(5)

(o) s1 .substring(5, 11)

(p) s1.startsWith("Wel")

(q) s1.endsWith("Java")

(r) s1 .toLowerCase()

(s) s1 .toUpperCase()

(t) s1 .concat (s2)

(u) s1.contain(s2)

(v) "\t Wel \t".trim()