12 static and static initialization parameter value transfer

Within the same category Within the same category In addition to static methods Calling other methods must first new Here is the method
object ;

Subordinate to There is no need to find someone I can't find — Static method facade Out of commission Non static method
But subordinate to the object You can call the ---- In the ordinary way You can call static methods directly

initiate static
Construction method Used for object initialization
initiate static Used for class initialization

Static statement block Class initializes （ Create a class ） That is, execute when loading code Ordinary methods cannot be called and class Because static methods and variables Are executed when creating classes The object has not been created yet
Sentence block Execute when constructing methods （ When you create an object ）

public class teest {

public teest(int c){
	System.out.println(c);
}
//  Sentence block 
{	
	System.out.println(" Statement block execution ");
}

//  Static statement block 
static	{	
		System.out.println(" Static statement block execution ");
	}
	
public static void main(String[] args) {
	System.out.println(" Start execution ");
	teest c= new teest(9);
}

}

//result
Static statement block execution
Start execution
Statement block execution
9

Two Parameter values
JAVA All parameters are Value passed That is, pass a copy of the value Copy change The original parameters will not be changed
When passing reference data types We send an address At this point, once the value pointed to by the copy changes The value of the original parameter to the position must also change character string Is a directional variable

Reference data type passing The transmission is also worth It's just This value is the address Once the address changes It will not affect the previous address