Java Quick Reference

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References

Java(TM) 2 SDK Documentation
Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification
javadoc - The Java API Documentation Generator

 

Comments

// rest of line
/* multiline comment */
/** documentation comment */
 

 

Creating Documentation Files

javadoc -d docfile -author sourcefiles

 

Classes

public class name
{  [class_variable_declarations]
   public static void main{String[] args) {statements}
   [methods]
}

 

Methods

{public | private} [static] {type | void} name(arg, ..., arg) {statements}

 

Class Variable Declarations

{public | private} static type name [= expression];

 

Types and Literals

null	null
boolean	true false
char	'a'
byte short int long	32 2147483648L
float double	3.14E+5F 3.14E+5
String	"A string"
type[[length]]	{1, 2, 3}

 

Operators

Numerical: + - * / %
String: +
Relational: == != < <= > >= string.equals(string)
Boolean: ! && ||

 

Conditional Expression

(condition ? then_expression : else_expression)

 

I/O

System.out.print[ln](string)

 

Control Structures

[label:]{statements}
break [label];
return expression;
System.exit(0);
if (condition) statement [else statement]
while (condition) statement
do statement while (condition);
for (initialization; termination; update) statement
switch (integer_or_char_expression) {
   case integer_or_char_literal: statements break;
   ...
   case integer_or_char_literal: statements break;
   default: statements}

Hooman Baradaran ( http://www.hoomanb.com )