Utility class to store a String Array as String and get it back (don't work with ", ")

StringArrayStringStore.java

import java.util.Arrays;

/**
 * Utility class to store a String Array as String and get it back
 */
public class StringArrayStringStore {

	private String backup;
				
	public String[] storeRestore(String[] datas) {
		store(datas);
		return restore();
	}
	
	public void store(String[] datas) {
		backup = Arrays.toString(datas);
	}

	public String[] restore() {
		return backup.substring(1, backup.length()-1).split(", ");
	}

}

StringArrayStringStoreTest.java

import java.util.Arrays;
import java.util.Collection;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class StringArrayStringStoreTest {

	
    @Parameters
    public static Collection<String[][]> data() {
        return Arrays.asList(new String[][][] {     
                 {{"a","b"}},
                 {{"c"}}
           });
    }
    
    private String[] data;

    public StringArrayStringStoreTest(String[] data) {
        this.data = data;
    }    
	
	@Test
	public void testStoreRestoreEmptyArray() {
		Assert.assertArrayEquals("Data was corrupted during store restore",data, new StringArrayStringStore().storeRestore(data));
	}

}