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
