Mega Code Archive
Determines if the specified string is permissible as a Java identifier
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/*
* Copyright 2005 Joe Walker
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
/**
* @author Joe Walker [joe at getahead dot ltd dot uk]
*/
public class Main {
/**
* Determines if the specified string is permissible as a Java identifier.
* Returns true if the string is non-null, non-zero length with a Java
* identifier start as the first character and Java identifier parts in all
* remaining characters.
* @param test the string to be tested.
* @return true if the string is a Java identifier, false otherwise.
* @see java.lang.Character#isJavaIdentifierPart(char)
* @see java.lang.Character#isJavaIdentifierStart(char)
*/
public static boolean isJavaIdentifier(String test)
{
if (test == null || test.length() == 0)
{
return false;
}
if (!Character.isJavaIdentifierStart(test.charAt(0)) && test.charAt(0) != '_')
{
return false;
}
for (int i = 1; i < test.length(); i++)
{
if (!Character.isJavaIdentifierPart(test.charAt(i)) && test.charAt(i) != '_')
{
return false;
}
}
return true;
}
}
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