Main.java Source code

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Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.util.Collection;

public class Main {
    public static <T, C extends Collection<T>> void ensureAdded(C collection, T t) throws IllegalStateException {
        if (!collection.add(t)) {
            throw new IllegalStateException("duplicate entry of " + t);
        }
    }
}