MessagePatternUtil (ICU4J 78)

java.lang.Object
- com.ibm.icu.text.MessagePatternUtil

```
public final class MessagePatternUtil
extends Object
```
Utilities for working with a MessagePattern. Intended for use in tools when convenience is more important than minimizing runtime and object creations.
This class only has static methods. Each of the nested classes is immutable and thread-safe.
This class and its nested classes are not intended for public subclassing.

Author:

Markus Scherer

Status:
Stable ICU 49.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`MessagePatternUtil.ArgNode`	A piece of MessageNode contents representing a message argument and its details.
`static class`	`MessagePatternUtil.ComplexArgStyleNode`	A Node representing details of the argument style of a complex argument.
`static class`	`MessagePatternUtil.MessageContentsNode`	A piece of MessageNode contents.
`static class`	`MessagePatternUtil.MessageNode`	A Node representing a parsed MessageFormat pattern string.
`static class`	`MessagePatternUtil.Node`	Common base class for all elements in a tree of nodes returned by `buildMessageNode(MessagePattern)`.
`static class`	`MessagePatternUtil.TextNode`	Literal text, a piece of MessageNode contents.
`static class`	`MessagePatternUtil.VariantNode`	A Node representing a nested message (nested inside an argument) with its selection criterion.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static MessagePatternUtil.MessageNode`	`buildMessageNode(MessagePattern pattern)`	Factory method, builds and returns a MessageNode from a MessagePattern.
`static MessagePatternUtil.MessageNode`	`buildMessageNode(String patternString)`	Factory method, builds and returns a MessageNode from a MessageFormat pattern string.

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

- Method Detail
  - buildMessageNode
```
public static MessagePatternUtil.MessageNode buildMessageNode(String patternString)
```
    Factory method, builds and returns a MessageNode from a MessageFormat pattern string.
    
    Parameters:
    
    patternString - a MessageFormat pattern string
    
    Returns:
    
    a MessageNode or a ComplexArgStyleNode
    
    Throws:
    
    IllegalArgumentException - if the MessagePattern is empty or does not represent a MessageFormat pattern
    
    Status:
    Stable ICU 49.
  - buildMessageNode
```
public static MessagePatternUtil.MessageNode buildMessageNode(MessagePattern pattern)
```
    Factory method, builds and returns a MessageNode from a MessagePattern.
    
    Parameters:
    
    pattern - a parsed MessageFormat pattern string
    
    Returns:
    
    a MessageNode or a ComplexArgStyleNode
    
    Throws:
    
    IllegalArgumentException - if the MessagePattern is empty or does not represent a MessageFormat pattern
    
    Status:
    Stable ICU 49.