Eclipse - Workspace in use or cannot be created chose a different one

public class Main extends Activity {

private TextView mTextView;
private Activity mAct;
private Intent mIntent;

protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main_layout);
  mTextView = findViewById(R.id.mTextView);
  mAct = getActivity();
  mIntent = getIntent();
 }

}

public class Main extends Fragment{

 private TextView mTextView;
 private FragmentActivity mFrgAct;
 private Intent mIntent;
 private LinearLayout mLinearLayout;
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
          Bundle savedInstanceState) {
          View root = inflater.inflate(R.layout.fragment_main, null);
        return root;
    }

 public void onViewCreated(View view, Bundle savedInstanceState) {
          // you can add listener of elements here
          /*Button mButton = (Button) view.findViewById(R.id.button);
            mButton.setOnClickListener(this); */
          mTextView = view.findViewById(R.id.mTextView);
          mLinearLayout = (LinearLayout)view;
 }
 public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
          mFrgAct = getActivity();
          mIntent = mFrgAct.getIntent(); //  Intent intent = new Intent(getActivity().getIntent());
 }

}

C:\documents\workspace\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.jdt.ui.prefs

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
	android:layout_width="fill_parent" android:layout_height="fill_parent"
	xmlns:android="//schemas.android.com/apk/res/android">

	// horizontal and vertical Scrollview
	<ScrollView android:id="@+id/ScrollView01"
		android:layout_height="135px" android:layout_width="wrap_content"
		android:scrollbars="horizontal|vertical">

		// HorizontalScrollview
		<HorizontalScrollView android:id="@+id/HorizontalScrollView01"
			android:layout_height="fill_parent" android:layout_width="wrap_content">

			<LinearLayout android:id="@+id/LinearLayout02"
				android:layout_width="wrap_content" android:orientation="vertical"
				android:layout_height="fill_parent">
				<LinearLayout android:orientation="horizontal"
					android:layout_width="fill_parent" android:layout_height="fill_parent"
					android:layout_weight="1">
					<TextView android:text="red" android:gravity="center_horizontal"
						android:background="#aa0000" android:layout_width="200px"
						android:layout_height="fill_parent" android:layout_weight="1" />
					<TextView android:text="green" android:gravity="center_horizontal"
						android:background="#00aa00" android:layout_width="200px"
						android:layout_height="fill_parent" android:layout_weight="1" />
					<TextView android:text="blue" android:gravity="center_horizontal"
						android:background="#0000aa" android:layout_width="200px"
						android:layout_height="fill_parent" android:layout_weight="1" />
					<TextView android:text="yellow" android:gravity="center_horizontal"
						android:background="#aaaa00" android:layout_width="200px"
						android:layout_height="fill_parent" android:layout_weight="1" />
				</LinearLayout>

				<LinearLayout android:orientation="vertical"
					android:layout_width="fill_parent" android:layout_height="fill_parent"
					android:layout_weight="1">
					<TextView android:text="row one" android:textSize="15pt"
						android:layout_width="fill_parent" android:layout_height="wrap_content"
						android:layout_weight="1" />
					<TextView android:text="row two" android:textSize="15pt"
						android:layout_width="fill_parent" android:layout_height="wrap_content"
						android:layout_weight="1" />
					<TextView android:text="row three" android:textSize="15pt"
						android:layout_width="fill_parent" android:layout_height="wrap_content"
						android:layout_weight="1" />
					<TextView android:text="row four" android:textSize="15pt"
						android:layout_width="fill_parent" android:layout_height="wrap_content"
						android:layout_weight="1" />
				</LinearLayout>


			</LinearLayout>
		</HorizontalScrollView>
	</ScrollView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/layout"
    android:orientation="vertical" >

    <HorizontalScrollView
        android:id="@+id/horizontalScrollView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <LinearLayout
            android:id="@+id/linearLayout1"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="horizontal" >
        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Hello world! First TextView" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Medium Text"
            android:textAppearance="?android:attr/textAppearanceMedium" />

        </LinearLayout>



    </HorizontalScrollView>

</LinearLayout>

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "End" };
		   List<String> arrayList = new LinkedList<String>();
            for(String s: arrayOfString)
		     arrayList.add(s);

		    Collections.shuffle(arrayList);

		    System.out.println(arrayList);
		    
		  }
}
/*
[hello, world!, bye-bye, nothing, people, End, Hello]
*/