51 lines
866 B
Java
51 lines
866 B
Java
package it.cavallium.data.generator;
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public class Nullable<T> {
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private static final long serialVersionUID = 1L;
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private final T value;
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public Nullable(T value) {
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this.value = value;
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}
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public static <T> Nullable<T> of(T value) {
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if (value == null) {
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throw new NullPointerException();
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} else {
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return new Nullable<>(value);
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}
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}
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public static <T> Nullable<T> ofNullable(T value) {
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return new Nullable<>(value);
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}
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public static <T> Nullable<T> empty() {
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return new Nullable<>(null);
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}
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public boolean isEmpty() {
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return value == null;
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}
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public boolean isPresent() {
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return value != null;
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}
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@org.jetbrains.annotations.NotNull
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public T get() {
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if (value == null) {
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throw new NullPointerException();
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} else {
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return value;
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}
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}
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@org.jetbrains.annotations.Nullable
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public T getNullable() {
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return value;
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}
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}
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