public class Demo { int a=1; static int b=1; Demo(){ a++; b++; } Demo(int c){ this.a=this.a+c; this.b=this.b+c; } public static void main(String[] args) { Demo t1=new Demo(); Demo t2=new Demo(2); System.out.println(t1.a);//2 System.out.println(t1.b);//4 System.out.println(t2.a);//3 System.out.print...