java里的 thread 源码

最新推荐文章于 2024-10-25 16:21:33 发布

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最新推荐文章于 2024-10-25 16:21:33 发布

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本文详细介绍了Java中Thread类的不同构造方法，包括无参数构造方法、带有Runnable对象的构造方法及带有名称的构造方法等。这些构造方法允许开发者创建新的线程，并指定线程所属的线程组以及线程启动后将执行的任务。

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/**
     * Constructs a new {@code Thread} with no {@code Runnable} object and a
     * newly generated name. The new {@code Thread} will belong to the same
     * {@code ThreadGroup} as the {@code Thread} calling this constructor.
     *
     * @see java.lang.ThreadGroup
     * @see java.lang.Runnable
     */
    public Thread() {
        create(null, null, null, 0);
    }

    /**
     * Constructs a new {@code Thread} with a {@code Runnable} object and a
     * newly generated name. The new {@code Thread} will belong to the same
     * {@code ThreadGroup} as the {@code Thread} calling this constructor.
     *
     * @param runnable
     *            a {@code Runnable} whose method <code>run</code> will be
     *            executed by the new {@code Thread}
     *
     * @see java.lang.ThreadGroup
     * @see java.lang.Runnable
     */
    public Thread(Runnable runnable) {
        create(null, runnable, null, 0);
    }

    /**
     * Constructs a new {@code Thread} with a {@code Runnable} object and name
     * provided. The new {@code Thread} will belong to the same {@code
     * ThreadGroup} as the {@code Thread} calling this constructor.
     *
     * @param runnable
     *            a {@code Runnable} whose method <code>run</code> will be
     *            executed by the new {@code Thread}
     * @param threadName
     *            the name for the {@code Thread} being created
     *
     * @see java.lang.ThreadGroup
     * @see java.lang.Runnable
     */
    public Thread(Runnable runnable, String threadName) {
        if (threadName == null) {
            throw new NullPointerException();
        }

        create(null, runnable, threadName, 0);
    }

    /**
     * Constructs a new {@code Thread} with no {@code Runnable} object and the
     * name provided. The new {@code Thread} will belong to the same {@code
     * ThreadGroup} as the {@code Thread} calling this constructor.
     *
     * @param threadName
     *            the name for the {@code Thread} being created
     *
     * @see java.lang.ThreadGroup
     * @see java.lang.Runnable
     *
     */
    public Thread(String threadName) {
        if (threadName == null) {
            throw new NullPointerException();
        }

        create(null, null, threadName, 0);

}