Code example for TreeSet

Methods: isEmpty

0
    public int size() { 
        return fixtures.size(); 
    } 
 
    public boolean isEmpty() { 
        return fixtures.isEmpty(); 
    } 
 
    public boolean contains(Fixture o) { 
        return fixtures.contains(o); 
    } 
 
    public void add(Fixture fixture) { 
        fixtures.add(fixture); 
    } 
 
    public boolean remove(Fixture o) { 
        return fixtures.remove(o); 
    } 
 
    public void clear() {