What is wrong with the following java code?

demo.java:15: error: ')' expected
                System.out.println(q " "+ w);
                                    ^
demo.java:15: error: not a statement
                System.out.println(q " "+ w);
                                        ^
demo.java:15: error: ';' expected
                System.out.println(q " "+ w);
                                           ^
3 errors

class demo
{
    int a,b;
    
    demo(int i,int j)
    {
        a=i;
        b=j;
    }
    
    void test(int x,int y)
    {
        int q=0,w=0;
        q=x;w=y;
        q*=10;
        w/=2;
        System.out.println(q " "+ w);
    }
    
    public static void main(String args[])
    {
        demo d = new demo(5,6);
        System.out.println("Previous value are "+ d.a+" and "+d.b);
        d.test(5,6);
        System.out.print(d.a+" "+d.b);
    }
}

5 and 6
50 3
5 and 6