com.softicar.platform.common.core.annotations.Nullable Maven / Gradle / Ivy

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The SoftiCAR Platform is a lightweight, Java-based library to create interactive business web applications.

There is a newer version: 50.0.0

package com.softicar.platform.common.core.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;

/**
 * This annotation defines a Java reference to be null-able.
 * 
 * Valid references that can be marked as null-able include method return
 * values, method parameters and local variables. Such an annotation has two
 * consequences:
 * 

 * Binding a null value to the reference is legal.
 * Dereferencing the reference is unsafe, i.e., a
 * NullPointerException can occur at runtime.
 * 
 */
@Documented
@Retention(RetentionPolicy.CLASS)
@Target({ ElementType.METHOD, ElementType.PARAMETER, ElementType.LOCAL_VARIABLE, ElementType.TYPE_PARAMETER, ElementType.TYPE_USE })
public @interface Nullable {
	// marker annotation with no members
}