Conditions in Java

First…Boolean Operators A boolean data type is always true or false. Boolean operators always return true or false For example: (x >y) asks “Is x bigger then y”?

Operators in Java x > yIs x greater then y? x < yIs x less then y? x>=yIs x greater then or equal to y? x<=yIs x less then or equal to y? x==yIs x equal to y?

The “if” statement Your program is going along, and you need to make a decision, a fork in the road… ?

The if statement In Java the if statement works like this: program… if( some condition ){ come in here! } program

For example if (grade < 50){ c.print(“You fail”); } //the program will only go inside the if block //if the grade is less then 50 Note: Don’t put semicolons on if statements!

If else Sometimes you want to specify another path if the condition is not met. For this you would use else. if(grade<50){ c.print(“You fail”); } else{ c.print(“you pass”); }

Conjunctives Two conditions can be linked together using conjunctives: AND OR Ex if(4<x AND x<10) Sometimes you want the opposite of a condition, Ex: if ( x is not equal to 4)

Symbols AND&& OR|| Not!

For example Let A and B be two conditions. A and B  (A && B) A or B  (A || B) Not A  (!A) Not (A and B)  !(A &&B)

Now Try A3!