class Circuit{

private String operation;
private int    number1, number2, output;    

public Circuit (int n1, int n2) {number1=n1;number2=n2;} public void setNumbers (int n1, int n2) {number=n1;number2=n2;} public void setOperation(string op){operation=op;} public void setN1(int n){number1 = n;} public void setN2(int n){number2 = n;} public void setOutput(int n){output = n;} public String getOperation(){return operation;} public int getN1(){return number1;} public int getN2 () {return number2;} public int getOutput(){return output;}
} public class JavaApplication8 {
private static void printCircuit ( Circuit a )

{System.out.print(a. getOperation + a.getOutput);

public static void main (String [] args ) 

Circuit a1 = new Circuit(2,3); a1.setOperation("Subtraction"); a1.setOutput(a1.getN1()+a1.getN2()); printCircuit(a1); }

الخطأ هنا public static void main (String [] args )

اتمى احد يوضح لي او يدلني على موقع يفيدني بالتعلم والحلول