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Java 验证端口值是否在范围（1）内

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验证端口值是否在范围内（1-65535）

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*  JMule - Java file sharing client

*  Any parts of this program derived from other projects, or contributed

*  by third-party developers are copyrighted by their respective authors.

*  This program is free software; you can redistribute it and/or

*  modify it under the terms of the GNU General Public License

*  as published by the Free Software Foundation; either version 2

*  of the License, or (at your option) any later version.

*  This program is distributed in the hope that it will be useful,

*  but WITHOUT ANY WARRANTY; without even the implied warranty of

*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

*  GNU General Public License for more details.

*  You should have received a copy of the GNU General Public License

*  along with this program; if not, write to the Free Software

*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

//package com.nowjava;
/*
N o w  J a v a  .   c o m 提 供
*/

public class Main {

public static void main(String[] argv) throws Exception {

int port = 2;

System.out.println(isPortInRange(port));

}

/**

* Validates a port value if it is in range ( 1 - 65535 )

* @param port the port to verify in int value. Unsigned short ports must be

* converted to singned int to let this function work correctly.

* @return true if the port is in range, false otherwise.

public static boolean isPortInRange(int port) {

return (port & 0xFFFF0000) == 0 && port != 0;

}

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编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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