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Java Expressions :
You may ask , what is expression mean ?
Expression is a combination of variables,operators and methods calls that evaluates a single value.

Java Expressions Examples :

String Expression Example


Action : assign value of string variable address to another string variable myaddress
Return Value: myaddress value ;
[code2]
String myaddress="asd";
String address ="rree";
myaddress=address;
[/code2]


Concatenate String


Action : concatenate the String code to the value of variable type
Return Value : the all string
java code
String type="rtrt";
type="code " + type;


Access a member


java code
int xArray[]= new int[5];
int length= xArray.length;


Action : get the number of elements in the array "myarray"
Return : integer represents the array size

Logical Expression


Code:
x==y

Action : check if x equal y
Return : true or false



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M. S. Rakha, Ph.D.
Queen's University
Canada


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