Android Open Source - WiFiSharer I P Address

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Back to project page WiFiSharer.

License

The source code is released under:

MIT License

Java Source Code

package com.example.wifisharer;
//  w ww. j  a va 2s.co m
public class IPAddress {

    private final int value;

    public IPAddress(int value) {
        this.value = value;
    }

    public IPAddress(String stringValue) {
        String[] parts = stringValue.split("\\.");
        if( parts.length != 4 ) {
            throw new IllegalArgumentException();
        }
        value = 
                (Integer.parseInt(parts[0], 10) << (8*3)) & 0xFF000000 | 
                (Integer.parseInt(parts[1], 10) << (8*2)) & 0x00FF0000 |
                (Integer.parseInt(parts[2], 10) << (8*1)) & 0x0000FF00 |
                (Integer.parseInt(parts[3], 10) << (8*0)) & 0x000000FF;
    }

    public int getOctet(int i) {

        if( i<0 || i>=4 ) throw new IndexOutOfBoundsException();

        return (value >> (i*8)) & 0x000000FF;
    }

    public String toString() {
        StringBuilder sb = new StringBuilder();

        for(int i=3; i>=0; --i) {
            sb.append(getOctet(i));
            if( i!= 0) sb.append(".");
        }

        return sb.toString();

    }

    @Override
    public boolean equals(Object obj) {
        if( obj instanceof IPAddress ) {
            return value==((IPAddress)obj).value;
        }
        return false;
    }

    @Override
    public int hashCode() {
        return value;
    }

    public int getValue() {
        return value;
    }

    public IPAddress next() {
        return new IPAddress(value+1);
    }


}

Java Source Code List

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