JAVA programm

[JAVA]

hallo

was stimmt den an diesem programm nicht??

  static double rechnung (double a,  
				     double h, )  
  {  
	double result;  
	  
	result=half*a*(h*h);  
	  
  
   }  
  
  
  public static void main(String[] args)  
    {  
  
		double a;  
		double h;  
		double result;  
		double half=0.5;  
			  
		System.out.println("Beschleunigung eingeben");  
		a=ReadDouble();  
		  
		  
		do{  
		System.out.println("Bitte Zeit eingeben");  
		h=ReadDouble();  
			  
		result=rechnung (a, h);  
		  
		System.out.println("Das Resultat = "+result);  
		  
		}while(h!=0);  
		  
		  
  }

das sind die fehler, die der editor ausgigbt:

funktion1.java:111: illegal start of type
     double h, )
               ^
funktion1.java:111: ')' expected
     double h, )
                ^
funktion1.java:112: ';' expected
  {
   ^
funktion1.java:113: <identifier> expected
double result;
             ^
funktion1.java:115: <identifier> expected
result=half*a*(h*h);
      ^
funktion1.java:121: class, interface, or enum expected
  public static void main(String[] args)
                ^
funktion1.java:125: class, interface, or enum expected
double h;
^
funktion1.java:126: class, interface, or enum expected
double result;
^
funktion1.java:127: class, interface, or enum expected
double half=0.5;
^
funktion1.java:129: class, interface, or enum expected
System.out.println("Beschleunigung eingeben");
^
funktion1.java:130: class, interface, or enum expected
a=ReadDouble();
^
funktion1.java:133: class, interface, or enum expected
do{
^
funktion1.java:135: class, interface, or enum expected
h=ReadDouble();
^
funktion1.java:137: class, interface, or enum expected
result=rechnung (a, h);
^
funktion1.java:139: class, interface, or enum expected
System.out.println("Das Resultat = "+result);
^
funktion1.java:141: class, interface, or enum expected
}while(h!=0);
^
funktion1.java:144: class, interface, or enum expected
  }
  ^
17 errors

danke