Module java.compiler
Package javax.lang.model.util

Class ElementFilter

java.lang.Object
javax.lang.model.util.ElementFilter
public class ElementFilter
extends Object
Filters for selecting just the elements of interest from a collection of elements. The returned sets and lists are new collections and do use the argument as a backing store. The methods in this class do not make any attempts to guard against concurrent modifications of the arguments. The returned sets and lists are mutable but unsafe for concurrent access. A returned set has the same iteration order as the argument set to a method.

If iterables and sets containing null are passed as arguments to methods in this class, a NullPointerException will be thrown.

Since:
1.6

  • Method Details

    • fieldsIn

      public static List<VariableElement> fieldsIn​(Iterable<? extends Element> elements)
      Returns a list of fields in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of fields in elements

    • fieldsIn

      public static Set<VariableElement> fieldsIn​(Set<? extends Element> elements)
      Returns a set of fields in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of fields in elements

    • recordComponentsIn

      public static List<RecordComponentElement> recordComponentsIn​(Iterable<? extends Element> elements)
      This method is associated with records, a preview feature of the Java language. Preview features may be removed in a future release, or upgraded to permanent features of the Java language.

      Returns a list of record components in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of record components in elements
      Since:
      14

    • recordComponentsIn

      public static Set<RecordComponentElement> recordComponentsIn​(Set<? extends Element> elements)
      This method is associated with records, a preview feature of the Java language. Preview features may be removed in a future release, or upgraded to permanent features of the Java language.

      Returns a set of record components in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of record components in elements
      Since:
      14

    • constructorsIn

      public static List<ExecutableElement> constructorsIn​(Iterable<? extends Element> elements)
      Returns a list of constructors in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of constructors in elements

    • constructorsIn

      public static Set<ExecutableElement> constructorsIn​(Set<? extends Element> elements)
      Returns a set of constructors in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of constructors in elements

    • methodsIn

      public static List<ExecutableElement> methodsIn​(Iterable<? extends Element> elements)
      Returns a list of methods in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of methods in elements

    • methodsIn

      public static Set<ExecutableElement> methodsIn​(Set<? extends Element> elements)
      Returns a set of methods in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of methods in elements

    • typesIn

      public static List<TypeElement> typesIn​(Iterable<? extends Element> elements)
      Returns a list of types in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of types in elements

    • typesIn

      public static Set<TypeElement> typesIn​(Set<? extends Element> elements)
      Returns a set of types in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of types in elements

    • packagesIn

      public static List<PackageElement> packagesIn​(Iterable<? extends Element> elements)
      Returns a list of packages in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of packages in elements

    • packagesIn

      public static Set<PackageElement> packagesIn​(Set<? extends Element> elements)
      Returns a set of packages in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of packages in elements

    • modulesIn

      public static List<ModuleElement> modulesIn​(Iterable<? extends Element> elements)
      Returns a list of modules in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a list of modules in elements
      Since:
      9

    • modulesIn

      public static Set<ModuleElement> modulesIn​(Set<? extends Element> elements)
      Returns a set of modules in elements.
      Parameters:
      elements - the elements to filter
      Returns:
      a set of modules in elements
      Since:
      9

    • exportsIn

      public static List<ModuleElement.ExportsDirective> exportsIn​(Iterable<? extends ModuleElement.Directive> directives)
      Returns a list of exports directives in directives.
      Parameters:
      directives - the directives to filter
      Returns:
      a list of exports directives in directives
      Since:
      9

    • opensIn

      public static List<ModuleElement.OpensDirective> opensIn​(Iterable<? extends ModuleElement.Directive> directives)
      Returns a list of opens directives in directives.
      Parameters:
      directives - the directives to filter
      Returns:
      a list of opens directives in directives
      Since:
      9

    • providesIn

      public static List<ModuleElement.ProvidesDirective> providesIn​(Iterable<? extends ModuleElement.Directive> directives)
      Returns a list of provides directives in directives.
      Parameters:
      directives - the directives to filter
      Returns:
      a list of provides directives in directives
      Since:
      9

    • requiresIn

      public static List<ModuleElement.RequiresDirective> requiresIn​(Iterable<? extends ModuleElement.Directive> directives)
      Returns a list of requires directives in directives.
      Parameters:
      directives - the directives to filter
      Returns:
      a list of requires directives in directives
      Since:
      9

    • usesIn

      public static List<ModuleElement.UsesDirective> usesIn​(Iterable<? extends ModuleElement.Directive> directives)
      Returns a list of uses directives in directives.
      Parameters:
      directives - the directives to filter
      Returns:
      a list of uses directives in directives
      Since:
      9