Unit 3 Boolean Expressions - 3.1

3.1 Boolean Expressions

Java’s relational operators

• equal to: ==
• not equal to: !=
• less than: <
• greater than: >
• less than or equal to: <=
• greater than or equal to >=

Hack!

int myAge = 15;
int otherAge = 45; 

using these integers, determine weather the following statements are True or False

1. False
2. True
3. True
4. False
5. False
6. True

Strings

popcorn hack

whats wrong with this code? (below)

String myName = "Alisha";

myName != "Anika";
myName == "Alisha" ;

true

comparison of string objects should be done using String methods, NOT integer methods.

• .equal
• compare to

String myName = "Alisha";
boolean areNamesEqual = myName.equals("Alisha");  

if (areNamesEqual) {
    System.out.println("True");
} else {
    System.out.println("False");
}

homework question

what is the precondition for num?