Java网络编程一

Posted 2021-01-12 Roni

 

1.InetAddress的应用

import java.util.List;
import java.math.BigDecimal;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;
import java.util.Stack;

import javax.naming.spi.DirStateFactory.Result;

import org.omg.PortableInterceptor.DISCARDING;

import java.util.Map;
import java.util.Queue;
/**
 * InetAddress类
 * @author 16114
 *
 */
public class Main{
    public static void main(String[] args) {
        try {
            InetAddress address = InetAddress.getLocalHost();
            System.out.println("计算机名：" + address.getHostName());
            System.out.println("IP地址：" + address.getHostAddress());
            byte[] bytes = address.getAddress();
            System.out.println("字节数组形式的IP：" + Arrays.toString(bytes));
            System.out.println(address);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        try {
            InetAddress address2 = InetAddress.getByName("Roni");
            System.out.println(address2.getHostName());
            System.out.println(address2.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        
        
    }
}