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main º¯Êý
C++
//×ÔÓɸ¡¶¯µÄº¯Êý
int main( int argc, char* argv[])
{
printf( "Hello, world" );
}
Java
// ÿ¸öº¯Êý¶¼±ØÐëÊÇÒ»¸öÀàµÄÒ»²¿·Ö;µ±java <class>ÔËÐÐÊÇÒ»¸öÌØ¶¨ÀàµÄÖ÷º¯Êý»á±»µ÷ÓÃ
// (Òò´ËÄã¿ÉÒÔÈÃÿ¸öÀà¶¼ÓÐÒ»¸ömainº¯Êý£¬ÕâÔÚдµ¥Ôª²âÊÔÊǺÜÓÐÓÃ)
class HelloWorld
{
public static void main(String args[])
{
System.out.println( "Hello, World" );
}
}
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C++
class Bar {};
Java
class Bar {}
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class Foo
{
static private int x;
// ¾²Ì¬³õʼ»¯¿é
{ x = 5; }
}
¶ÔÏóµÄÉùÃ÷
C++
// ÔÚÕ»ÖÐ
myClass x;
//»òÕßÔÚ¶ÑÖÐ
myClass *x = new myClass;
Java
// ×ÜÊÇÔÚ¶Ô¶ÑÖÐÉùÃ÷
myClass x = new myClass();
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C++
class Foo : public Bar
{ ... };
Java
class Foo extends Bar
{ ... }
·ÃÎʼ¶±ð (abstraction barriers)
C++
public:
void foo();
void bar();
Java
public void foo();
public void bar();
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C++
 
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import java.util.LinkedList;
public class ProducerConsumer
{
/**
* @param args
*/
public static void main(String[] args)
{
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Integer var = new Integer();//ÓÐÓï·¨´íÎó
Integer var = new Integer(2);//悦﵀
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