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This code Works perfectly. Did u take care of running time and space complexity?

it worked perfectly for the general cases. how about other test cases ?

This works for known array input. How about stream of characters.?

This works for known array input. How about stream of characters.?

@Bunnyyoung717 I just gave details of Table which was common for chair class too. So i didn't write full code...Just part of the code. Suppose if i have the same logic of table class to chair class, then is my code reasonable?

Thanks. But String str should not be hardcoded as in this case input should be a stream characters like "abcdefghighnjksfdkgdfskgsdjkfgb.............."
Also any java code will help me to understand lot more.

Does the below design sounds reasonable?

public interface Furniture {
    public void stressTest();
    public void fireTest();
}

public abstract class Chair implements Furniture {
public abstract String chairType();

}
public abstract class Table implements Furniture {
 public abstract String tableType();
}

public class MetalChair extends Chair {
    @Override
    public void stressTest() {
        //To change body of implemented methods use File | Settings | File Templates.
    }

    @Override
    public void fireTest() {
        //To change body of implemented methods use File | Settings | File Templates.
    }
}

public class MetalTable extends Table {
    @Override
    public void stressTest() {

        System.out.println("Passed Stress Test");
        //To change body of implemented methods use File | Settings | File Templates.
    }

    @Override
    public void fireTest() {
        //To change body of implemented methods use File | Settings | File Templates.
        System.out.println("Passed Fire Test");
    }

    @Override
    public String tableType() {
        //To change body of implemented methods use File | Settings | File Templates.
        String s = "This is a metal Table";
        return s;
    }
}


public class WoodenTable extends Table {
    @Override
    public void stressTest() {
        //To change body of implemented methods use File | Settings | File Templates.
        System.out.println("Failed Stress Test");
    }

    @Override
    public void fireTest() {
        //To change body of implemented methods use File | Settings | File Templates.
        System.out.println("Failed Fire Test");
    }

    @Override
    public String tableType() {
        //To change body of implemented methods use File | Settings | File Templates.
        String s = "This is a wooden Table";
        return s;
    }
}


public class WoodenChair extends Chair {
    @Override
    public void stressTest() {
        //To change body of implemented methods use File | Settings | File Templates.
    }

    @Override
    public void fireTest() {
        //To change body of implemented methods use File | Settings | File Templates.
    }
}

public class MainClass {
    public static void main(String[] args){
        Table table = null;
        Scanner input =  new Scanner(System.in);
        String str = input.next();
        if(str.equals("wooden")){
            table = new WoodenTable();


        }   else if (str.equals("metal")){
            table = new MetalTable();


        }

        System.out.println(table.tableType());
        table.stressTest();
        table.fireTest();

    }
}

Thanks. But a code implementation will still give more details..