possiblynull.java

来自「A static analysis tool to find bugs in J」· Java 代码 · 共 43 行

/*
 * Bytecode Analysis Framework
 * Copyright (C) 2005 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package edu.umd.cs.findbugs.annotations;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * The annotated element should might be null, and uses of the element should check for null.
 * 
 * When this annotation is applied to a method it applies to the method return value. 
 * @deprecated - use CheckForNull instead; the name of which more clearly indicates that 
 * not only could the value be null, but that good coding practice requires that the 
 * value be checked for null.
 **/
@Documented
@Target({ElementType.FIELD, ElementType.METHOD,
		 ElementType.PARAMETER, 
		 ElementType.LOCAL_VARIABLE})
@Retention(RetentionPolicy.CLASS) 
public @interface PossiblyNull {

}