Classes:

• chair object
  package Array;
  
  public class Chair {
  	
  	String color;
  	
  	public Chair(String color) {
  		this.color = color;
  	}
  
  }

• table object
  package Array;
  
  public class Table {
  	
  	String color;
  	
  	public Table(String color) {
  		this.color = color;
  	}
  
  }

• chairCollection object
  package Array;
  
  public class ChairCollection {
  	Chair[] collection;
  	int i;
  	
  	public ChairCollection() {
  		collection = new Chair[3];
  		i = 0;
  	}
  	
  	void add (Chair newChair) {
  		collection[i] = newChair;
  		i++;
  	}
  	
  	String getColor(int index) {
  		return collection[index].color;
  	}
  }

• tableCollection object
  package Array;
  
  public class TableCollection {
  
  	Table[] collection;
  	int i;
  	
  	public TableCollection() {
  		collection = new Table[2];
  		i = 0;
  	}
  	
  	
  	void add (Table newTable) {
  		collection[i] = newTable;
  		i++;
  	}
  	
  	String getColor(int index) {
  		return collection[index].color;
  	}
  }

• main class: array
  
  package Array;
  
  public class Array {
  
  	void start() {
  		Chair blueChair = new Chair("blue");
  		Chair redChair = new Chair("red");
  		Chair yellowChair = new Chair("yellow");
  		
  		Table blueTable = new Table("blue");
  		Table blackTable = new Table("black");
  		
  		ChairCollection chairCollection = new ChairCollection();
  		TableCollection tableCollection = new TableCollection();
  		
  		chairCollection.add(blueChair);
  		chairCollection.add(redChair);
  		chairCollection.add(yellowChair);
  		
  		tableCollection.add(blueTable);
  		tableCollection.add(blackTable);
  		
  		System.out.println("The color of this chair is: " + chairCollection.getColor(2));
  	}
  	
  	public static void main(String[] args) {
  		new Array().start();
  
  	}
  
  }