JAVA Quick Reference
Short summary:
of the Java programming language. java.lang.ref. Provides reference-object classes, which support a. limited degree of interaction with the garbage ...
Long summary:
JAVA Quick Reference Author: Jialong He Jialong_he@bigfoot.com http://www.bigfoot.com/jialong_he Simple Data Types byte 8 -128.127 short 16 -32,768.32,767 int 32 -2,147,483,648. 2,147,483,647 long 64 -9,223,372,036,854,775,808. 9,223,372,036,854,775,807 float 32 3.4e-0.38. 3.4e+0.38 double 64 1.7e-308. 1.7e+308 char 16 Complete Unicode Character Set Boolean true, false decare a variable: type identifier [= value]; Arrays int array_name[ ]; array_name=new int[100 ]; declare an integer array and allocate 100 elements of memory. int array_name[ ] = new int [ 100]; int array_name [ ] = {1, 2, 3, 4}; declare and allocate an integer array in one statement. int array_name[] = new int[10][20]; multidimensional array. null for reference type (class, array). Class {public|final|abstract} class name { [class_variable_declarations] public static void main{String[] args) {statements} [methods] } this, super Methods {public| private} [static] {type | void} name(arg, ., arg) {statements} Variable {public| private} [static] type name [= expression]; Arithmetic Operators +, -, *, / %, ++, -- addition, subtraction, multiplication, division modulus, increment, decrement. Relational Operators ==, !=, >, <, >=, <= equal, not equal, greater, less, greater or equal, less or equal. Logical Operators &, |, !, ^, ||, &&, AND, OR, NOT, XOR, short-circuit OR, AND Bitwise Operators &, |, , ^, >>, >>>, << AND, OR, NOT, XOR shift right, shift right zero fill, shift left. Comments // rest of line /* multiline comment */ /** documentation comment */ Compile and Run javac nameOfFile.java java nameOfFile CLASSPATH must set correctly. The name of the file has to match exactly the name of the class. Flow Control if (Boolean-expression) statement1; [ else statement2; ] while loop [initialization] while (termination-clause) { body; [iteration;] } do while loop do { body; [iteration;] } while (termination-clause); for loop for (i ...
Source: tiger.la.asu.edu
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