기록 보관소 JAVA

JAVA language tutorial.

2013년 8월 6일 화요일

작성자: sobahoko 시간: 오전 11:24

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operator overloading

Java doesn't offer operator overloading! So, We can't write code like this; Complex a, b, c; a = b + c; ...
java tutorial

Let's read java tutorial. http://docs.oracle.com/javase/tutorial/
Wildcards

Upper Bounded Wildcards public static void process( List< ? extends Foo> list ) { /* ... */ } Unbounded Wildcards public s...
package, type, source file

If you put multiple types in a single source file, only one can be public, and it must have the same name as the source file. You can incl...
inheritance

inheritance superclass subclass one direct superclass unlimited number of subclass extends keyword
Restrictions on Generics

Java generics has following restrictions: Cannot Instantiate Generic Types with Primitive Types Cannot Create Instances of Type Param...
How will Java technology change my life?

( http://docs.oracle.com/javase/tutorial/getStarted/intro/changemylife.html ) Java can't promise me fame, fortune, or even a job....
The "Hello World!" in Eclipse
About the Java Technology

( http://docs.oracle.com/javase/tutorial/getStarted/intro/definition.html ) .java : plain text files .class : bytecodes ( the machi...
Primitive Data Types

( http://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html ) byte short int long float double boolean char u...