//assignment submission: do not forget the sign-off statement
//style is important! So are variable names, comments, and testing


// difference between null and empty string ""
String s
s
String s2 = ""
s2
s == s2
s.equals(s2)
s2.equals(s)

String s = "hello";
String s1 = new String("hello");
s.length()
s.indexOf("he")
s.indexOf("l")
s.indexOf("lo")
s.indexOf("p")
s.substring(2)
s.substring(4)
s.substring(0)
s.substring(9)
s.substring(0,2)
s.substring(2,3)
s.substring(2,6)
s.substring(2,2)

"ABC" + "DEF"
'ABC'  //what's wrong?
s + "a" + "bc"
s + 'a' + 'b'
s + 1
'a'
'ab'
'\n'
// '\n' is a single character: newline character
// \ is called the escape character
'\'
'\\'
'''
'\''
""
"""
"\""


//recall the Musician and Band classes:

Musician m1 = new Musician("Bob", 53);
    Musician m2 = new Musician("Linda", 34);
    Musician m3 = new Musician("Joe", 36);
    Band b = new Band(m1, m2, m3);
 
b.getMemberOne()
g.getMemberOne.getSalary()
b
b.toString()

Musician m1 = new Musician("Bob", 53);
Musician m2 = new Musician("Linda", 34);
Musician m3 = new Musician("Joe", 36);
Band b = new Band(m1, m2, m3);
 
m1.toString()


//now let's assume
// a musician could join a couple of bands and
// we want to keep track of the number bands she joined.
Musician m1 = new Musician("Bob", 53);
Musician m2 = new Musician("Linda", 34);
Musician m3 = new Musician("Joe", 36);
Band b = new Band(m1, m2, m3);
 
m1.getNumBands()
Band b1 = new Band(m1, m2, m3);
m1.getNumBands()
Musician m4 = new Musician("Mike", 34);
m4
m4.getNumBands()
Band b2 = new Band(m1, m1, m1);
m1.getNumBands()