java经典源代码（Java classic source code）.doc

java经典源代码(Java classic source code)
Remember to format Java when you save this kind of code!
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Class HelloWorld {
Public native void displayHelloWorld ();
Static
{
("hello");
}
Public static void main (String[] args) {
New HelloWorld ().DisplayHelloWorld ();
}
}
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Interface VideoCard
{
Void Display ();
String getName ();
}
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Interface Sport
{
Void run ();
Void jump ();
}
Class Athlete implements Sport
{
Public void run ()
{
(Sprint);
}
Public void jump ()
{
("three jump");
}
Public static void main (String[] args)
{
Athlete zhangsan=new Athlete ();
();
();
}
}
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puter
{
Public static void main (String[] args)
{
Dmeng d=new Dmeng ();
Mainboard m=new Mainboard ();
("Intel's CPU");
(D);
();
}
}
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Class Car
{
Class Wheel
{
}
}
Class PlaneWheel extends
{
PlaneWheel (Car car)
{
();
}
Public static void main (String[] args)
{
Car car=new Car ();
PlaneWheel pw=new PlaneWheel (car);
}
}
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Class A
{
Void FN1 ()
{
}
}
Abstract class B
{
Abstract void FN2 ();
}
Class C extends A
{
B getB ()
{
Return new B ()
{
Public void FN2 ()
{
}
};
}
}
Class Test
{
Static void method1 (A a)
{
();
}
Static void method2 (B b)
{
();
}
Public static void main (String[] args)
{
C c=new C ();
Method1 (C);
Method2 ( ());
}
}
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Class Animal
{
Int height, weight;
Animal (int height, int weight)
{
/ / ("animal construct");
}
Void eat ()
{
("animal eat");
}
Void sleep (