aQute.libg.generics.Create Maven / Gradle / Ivy

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This framework extension fragment contains an extender that facilitates the use of JRE SPI providers (components typically plugged in to the JRE through META-INF/services resources).

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package aQute.libg.generics;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Create {

	public static  Map map() {
		return new LinkedHashMap<>();
	}

	public static  Map map(Class key, Class value) {
		return Collections.checkedMap(new LinkedHashMap<>(), key, value);
	}

	public static  List list() {
		return new ArrayList<>();
	}

	public static  List list(Class c) {
		return Collections.checkedList(new ArrayList<>(), c);
	}

	public static  Set set() {
		return new LinkedHashSet<>();
	}

	public static  Set set(Class c) {
		return Collections.checkedSet(new LinkedHashSet<>(), c);
	}

	@SafeVarargs
	public static  List list(T... source) {
		return new ArrayList<>(Arrays.asList(source));
	}

	@SafeVarargs
	public static  Set set(T... source) {
		return new LinkedHashSet<>(Arrays.asList(source));
	}

	public static  Map copy(Map source) {
		return new LinkedHashMap<>(source);
	}

	public static  List copy(List source) {
		return new ArrayList<>(source);
	}

	public static  Set copy(Collection source) {
		if (source == null)
			return set();
		return new LinkedHashSet<>(source);
	}

}