java.lang.Object
- java.util.AbstractCollection

All Implemented Interfaces:

Collection

Direct Known Subclasses:

AbstractList, AbstractSet
```
public abstract class AbstractCollection
extends Object
implements Collection
```

Constructor Summary

Constructors
Modifier Constructor Description

protected AbstractCollection()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`add(Object var0)`
`boolean`	`addAll(Collection var0)`
`void`	`clear()`
`boolean`	`contains(Object var0)`
`boolean`	`containsAll(Collection var0)`
`boolean`	`isEmpty()`
`abstract Iterator`	`iterator()`
`boolean`	`remove(Object var0)`
`boolean`	`removeAll(Collection var0)`
`boolean`	`retainAll(Collection var0)`
`abstract int`	`size()`
`Object[]`	`toArray()`
`Object[]`	`toArray(Object[] var0)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection
equals, hashCode

- Constructor Detail
  - AbstractCollection
```
protected AbstractCollection()
```
- Method Detail
  - add
```
public boolean add(Object var0)
```
    Specified by:
    
    add in interface Collection
  - addAll
```
public boolean addAll(Collection var0)
```
    Specified by:
    
    addAll in interface Collection
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Collection
  - contains
```
public boolean contains(Object var0)
```
    Specified by:
    
    contains in interface Collection
  - containsAll
```
public boolean containsAll(Collection var0)
```
    Specified by:
    
    containsAll in interface Collection
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Collection
  - iterator
```
public abstract Iterator iterator()
```
    Specified by:
    
    iterator in interface Collection
  - remove
```
public boolean remove(Object var0)
```
    Specified by:
    
    remove in interface Collection
  - removeAll
```
public boolean removeAll(Collection var0)
```
    Specified by:
    
    removeAll in interface Collection
  - retainAll
```
public boolean retainAll(Collection var0)
```
    Specified by:
    
    retainAll in interface Collection
  - size
```
public abstract int size()
```
    Specified by:
    
    size in interface Collection
  - toArray
```
public Object[] toArray()
```
    Specified by:
    
    toArray in interface Collection
  - toArray
```
public Object[] toArray(Object[] var0)
```
    Specified by:
    
    toArray in interface Collection
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class AbstractCollection

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Constructor Detail

AbstractCollection

Method Detail

add

addAll

clear

contains

containsAll

isEmpty

iterator

remove

removeAll

retainAll

size

toArray

toArray

toString