public class Main {

public static void main(String[] args){

System.out.println("Hello");

}

}

public class Main {

public static void main(String[] args){

double a,b,c,x1,x2;

a=1;b=2;c=1;

double wynik,pier;

wynik =b*b-4*a*c;

pier=Math.sqrt(wynik);

if(wynik>0){

x1=(-(b)-pier)/2*a;

x2=(b-pier)/2*a;

System.out.println("Sa dwa rozwiazania:"+ x1 +"," + x2);

}

else if(wynik==0){

x1=(-b)/4*a;

System.out.println("Jest jedno rozwiazanie :" + x1);

}

else

System.out.println("Brak rozwiazan");

}}

uruchamianie

java -jar "C:\Documents and Settings\pyrzewic\JavaApplication1\dist\JavaApplication1.jar” 1.0 2.0 2.0 //parametry na końcu

a=Double.valueOf(args[0]);

b=Double.valueOf(args[1]);

c=Double.valueOf(args[2]);

public class Kolo{

private double x,y,r;

static int n=0;

public Kolo(){

x=0;y=0;r=0;n++;

}

public Kolo(double x,double y,double r){

this.x=x;

this.y=y;

this.r=r;

n++;

}

public int ile() {return n;}

}

public class Main {

public static void main(String[] args){

Kolo k=new Kolo();

Kolo r=new Kolo(5,5,5);

System.out.println("Stworzono " + k.ile() + " obiekt(ow)y" );

}}

public int GetX() {return x;} //bez tego

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