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A java library with many useful functions and classes

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package net.lenni0451.commons;

import javax.annotation.concurrent.ThreadSafe;
import java.util.function.Supplier;

/**
 * An object to store a value that is only initialized when required.

 * Useful for objects that are expensive to create and are not always needed.
 *
 * @param  The type of the object
 */
@ThreadSafe
public class Lazy {

    /**
     * Create a new lazy object.
     *
     * @param supplier The supplier to create the object
     * @param       The type of the object
     * @return The lazy object
     */
    public static  Lazy of(final Supplier supplier) {
        return new Lazy<>(supplier);
    }


    private final Object lock = new Object();
    private final Supplier supplier;
    private T value;
    private volatile boolean initialized = false;

    public Lazy(final Supplier supplier) {
        this.supplier = supplier;
    }

    /**
     * @return The value of the object
     */
    public T get() {
        if (!this.initialized) {
            synchronized (this.lock) {
                if (!this.initialized) {
                    this.value = this.supplier.get();
                    this.initialized = true;
                }
            }
        }
        return this.value;
    }

}