charlie@charlie:~/JavaFooBar$ ls
FooBar.java
charlie@charlie:~/JavaFooBar$ cat FooBar.java
public class FooBar {

        public FooBar(String[] args) {

                double a=1.5;
                int b=(int)a;
                System.out.println(b);

                //Object c=1.5;
                //int d=(int)c;
                //System.out.println(d);

                Object e=1.5;
                double f=(double)e;
                int g=(int)f;
                System.out.println(g);

                Object h=1.5;
                int i=(int)(double)h;
                System.out.println(i);
        }

        public static void main(String[] args) {
                new FooBar(args);
        }
}
charlie@charlie:~/JavaFooBar$ javac FooBar.java
charlie@charlie:~/JavaFooBar$ ls
FooBar.class  FooBar.java
charlie@charlie:~/JavaFooBar$ java FooBar
1
1
1
charlie@charlie:~/JavaFooBar$ java -version
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)