// DrJava saved history v2
Student s1 = new Student(); 
s1.setFirstName("Diane");
Student s2 = new Student();
s2.setFirstName("Diane");
7 == 0
7 == 7
s1 == s2
s1
s2
s1 == s1
s1 = s2;
s1 == s2
Student s3 = new Student();
s3.setFirstName("Tom");
s1.getFirstName() == s3.getFirstName()
s1.getFirstName() == s1.getFirstName()
"Test" == "Test"
String ex1 = "Test";
String ex2 = new String("Test");
ex1 == ex2
ex1.equals(ex2)
ex1.equals("Test")
ex1.equals("Test2")
"apple".equals("apple")
ex2.equals(ex1)
s1.getFirstName()
s3.getFirstName()
s1.equals(s3)
"a" == "a"
"a".equals("a")
int x = 8;
x
(double) x
x
(int) 73.2
(boolean) 7
Student a = new Student("X", "Y");
Student b = new Student("X", "Y");
a.equals(b)
a == b
b.setFirstName("A")
a.equals(b)
b.setFirstName("B")
a.equals(b)
b.setFirstName("X")
a.equals(b)
b.setLastName("X")