Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Collection;

public class Main {
    public static void checkCollectionDoesNotContainNull(final Collection<?> collection) {
        boolean containsNull = false;

        try {
            containsNull = collection.contains(null);
        } catch (NullPointerException ex) {
            // Not a problem.
        }

        if (containsNull) {
            throw new NullPointerException();
        }
    }
}