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; ...
inheritance

inheritance superclass subclass one direct superclass unlimited number of subclass extends keyword
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...
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...
The "Hello World!" in Eclipse
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....
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...