Deprecated in Java

java.lang.Deprecated

A program element annotated @Deprecated is one that programmers are discouraged from using. An element may be deprecated for any of several reasons, for example, its usage is likely to lead to errors; it may be changed incompatibly or removed in a future version; it has been superseded by a newer, usually preferable alternative; or it is obsolete.

Compilers issue warnings when a deprecated program element is used or overridden in non-deprecated code. Use of the @Deprecated annotation on a local variable declaration or on a parameter declaration or a package declaration has no effect on the warnings issued by a compiler.

When a module is deprecated, the use of that module in requires, but not in exports or opens clauses causes a warning to be issued. A module being deprecated does not cause warnings to be issued for uses of types within the module.

This annotation type has a string-valued element since. The value of this element indicates the version in which the annotated program element was first deprecated.

This annotation type has a boolean-valued element forRemoval.A value of true indicates intent to remove the annotated program element in a future version. A value of false indicates that use of the annotated program element is discouraged, but at the time the program element was annotated, there was no specific intent to remove it.

Declaration

import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.LOCAL_VARIABLE;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.MODULE;
import static java.lang.annotation.ElementType.PACKAGE;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.ElementType.TYPE;

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

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(value = { CONSTRUCTOR, FIELD, LOCAL_VARIABLE,
        METHOD, PACKAGE, MODULE, PARAMETER, TYPE })
public @interface Deprecated {

    String since() default "";

    boolean forRemoval() default false;
}

Methods

1. since()

String java.lang.Deprecated.since() : ""

Returns the version in which the annotated element became deprecated.

The version string is in the same format and namespace as the value of the @since javadoc tag.

The default value is the empty string.

Returns: the version string.

2. forRemoval()

boolean java.lang.Deprecated.forRemoval() : false

Indicates whether the annotated element is subject to removal in a future version.

The default value is false.

Returns: whether the element is subject to removal.