**Inheritance:**
java.lang.Object

**All Implemented Interfaces:**
java.lang.Iterable
```
public class CustomXmlSchemaCollection implements Iterable
```

A collection of strings that represent XML schemas that are associated with a custom XML part.

To learn more, visit the [ Structured Document Tags or Content Control ][Structured Document Tags or Content Control] documentation article.

 **Remarks:** 

You do not create instances of this class. You access the collection of XML schemas of a custom XML part via the [CustomXmlPart.getSchemas()](../../com.aspose.words/customxmlpart/\#getSchemas) property.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```


[Structured Document Tags or Content Control]: https://docs.aspose.com/words/java/working-with-content-control-sdt/
## Methods

| Method | Description |
| --- | --- |
| [add(String value)](#add-java.lang.String) | Adds an item to the collection. |
| [clear()](#clear) | Removes all elements from the collection. |
| [deepClone()](#deepClone) | Makes a deep clone of this object. |
| [get(int index)](#get-int) | Gets the element at the specified index. |
| [getCount()](#getCount) | Gets the number of elements contained in the collection. |
| [indexOf(String value)](#indexOf-java.lang.String) | Returns the zero-based index of the specified value in the collection. |
| [iterator()](#iterator) | Returns an iterator object that can be used to iterate over all items in the collection. |
| [remove(String name)](#remove-java.lang.String) | Removes the specified value from the collection. |
| [removeAt(int index)](#removeAt-int) | Removes a value at the specified index. |
| [set(int index, String value)](#set-int-java.lang.String) | Sets the element at the specified index. |
### add(String value) {#add-java.lang.String}
```
public void add(String value)
```


Adds an item to the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | java.lang.String | The item to add. |

### clear() {#clear}
```
public void clear()
```


Removes all elements from the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

### deepClone() {#deepClone}
```
public CustomXmlSchemaCollection deepClone()
```


Makes a deep clone of this object.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Returns:**
[CustomXmlSchemaCollection](../../com.aspose.words/customxmlschemacollection/)
### get(int index) {#get-int}
```
public String get(int index)
```


Gets the element at the specified index.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | int |  |

**Returns:**
java.lang.String - The element at the specified index.
### getCount() {#getCount}
```
public int getCount()
```


Gets the number of elements contained in the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Returns:**
int - The number of elements contained in the collection.
### indexOf(String value) {#indexOf-java.lang.String}
```
public int indexOf(String value)
```


Returns the zero-based index of the specified value in the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | java.lang.String | The case-sensitive value to locate. |

**Returns:**
int - The zero based index. Negative value if not found.
### iterator() {#iterator}
```
public Iterator iterator()
```


Returns an iterator object that can be used to iterate over all items in the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Returns:**
java.util.Iterator
### remove(String name) {#remove-java.lang.String}
```
public void remove(String name)
```


Removes the specified value from the collection.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| name | java.lang.String | The case-sensitive value to remove. |

### removeAt(int index) {#removeAt-int}
```
public void removeAt(int index)
```


Removes a value at the specified index.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | int | The zero based index. |

### set(int index, String value) {#set-int-java.lang.String}
```
public void set(int index, String value)
```


Sets the element at the specified index.

 **Examples:** 

Shows how to work with an XML schema collection.

```

 Document doc = new Document();

 String xmlPartId = UUID.randomUUID().toString();
 String xmlPartContent = "Hello, World!";
 CustomXmlPart xmlPart = doc.getCustomXmlParts().add(xmlPartId, xmlPartContent);

 // Add an XML schema association.
 xmlPart.getSchemas().add("http://www.w3.org/2001/XMLSchema");

 // Clone the custom XML part's XML schema association collection,
 // and then add a couple of new schemas to the clone.
 CustomXmlSchemaCollection schemas = xmlPart.getSchemas().deepClone();
 schemas.add("http://www.w3.org/2001/XMLSchema-instance");
 schemas.add("http://schemas.microsoft.com/office/2006/metadata/contentType");

 Assert.assertEquals(3, schemas.getCount());
 Assert.assertEquals(2, schemas.indexOf("http://schemas.microsoft.com/office/2006/metadata/contentType"));

 // Enumerate the schemas and print each element.
 Iterator enumerator = schemas.iterator();
 while (enumerator.hasNext()) {
     System.out.println(enumerator.next());
 }

 // Below are three ways of removing schemas from the collection.
 // 1 -  Remove a schema by index:
 schemas.removeAt(2);

 // 2 -  Remove a schema by value:
 schemas.remove("http://www.w3.org/2001/XMLSchema");

 // 3 -  Use the "Clear" method to empty the collection at once.
 schemas.clear();

 Assert.assertEquals(schemas.getCount(), 0);
 
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | int |  |
| value | java.lang.String | The element at the specified index. |