jam/DefensiveProgram

01 packagepackage is used to name the directory or folder a class is in jam;
02 
03 importimport means to make the classes and/or packages available in this program wiki.Wiki;
04 /**
05  * All about my application here.
06  * @authorthis is the Javadoc tag for documenting who created the source code Jam Jenkins 
07  */
08 publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects DefensiveProgram
09 {open braces start code blocks and must be matched with a close brace
10   publicpublic is used to indicate unrestricted access (any other class can have access) staticstatic means that an instance is not required for access (class level access) voidvoid means the method does not return a value mainThe main method is the place where applications begin executing.(String[brackets are typically used to declare, initialize and index (indicate which element of) arrays]brackets are typically used to declare, initialize and index (indicate which element of) arrays args)
11   {open braces start code blocks and must be matched with a close brace
12     intint is the type for whole numbers and it is short for integer sum=this assignment operator makes the left side equal to the right side1+adds two numbers together or concatenates Strings together0+adds two numbers together or concatenates Strings together1+adds two numbers together or concatenates Strings together1+adds two numbers together or concatenates Strings together0;
13     doubledouble is the type for numbers that can contain decimal fractions average=this assignment operator makes the left side equal to the right sidesum/5;
14     ifif executes the next statement only if the condition in parenthesis evaluates to true(average*5!=this is the not equals operator which evaluates to true if both sides are differentsum)
15       Wiki.out.println("Something went wrong!");
16     Wiki.out.print("The average is "+adds two numbers together or concatenates Strings togetheraverage);
17     Wiki.out.println("The average is "+adds two numbers together or concatenates Strings togetheraverage);
18   }close braces end code blocks and must match an earlier open brace
19 }close braces end code blocks and must match an earlier open brace