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The Checker Framework enhances Java's type system to
make it more powerful and useful. This lets software developers
detect and prevent errors in their Java programs.
The Checker Framework includes compiler plug-ins ("checkers")
that find bugs or verify their absence. It also permits you to
write your own compiler plug-ins.
package org.checkerframework.framework.qual;
import static java.lang.annotation.ElementType.*;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Specifies the annotations to be included in a type without having to provide
* them explicitly.
*
*
* This annotation permits specifying multiple default qualifiers for more
* than one type system. It is necessary because Java forbids multiple
* annotations of the same name at a single location.
*
* Example:
*
*
* @DefaultQualifiers({
* @DefaultQualifier(NonNull.class),
* @DefaultQualifier(value = Interned.class, locations = ALL_EXCEPT_LOCALS),
* @DefaultQualifier(Tainted.class)
* })
*
*
* @see DefaultQualifier
*/
// TODO: use repeating annotations (will make source depend on Java 8).
@Documented
@Retention(RetentionPolicy.SOURCE)
@Target({PACKAGE, TYPE, CONSTRUCTOR, METHOD, FIELD, LOCAL_VARIABLE, PARAMETER})
public @interface DefaultQualifiers {
/** The default qualifier settings */
DefaultQualifier[] value() default {};
}