Version.java

package com.evanram.code.java.dimchat_client;

public class Version
{
	private String ver;
	private int majorVer, minorVer, revisionNum;
	private char releaseStage;
	private String versionWarn = "Bad version format! (expected: \'#.#.#(a/b)\')";
	
	public Version(String ver) throws VersionException
	{
		this.ver = ver;
		parse();
	}

	private void parse() throws VersionException
	{
		String[] split = ver.split("\\.");

		if(split.length < 3)
			throw new VersionException(versionWarn);
		
		try
		{
			majorVer = Integer.parseInt(split[0]);
			minorVer = Integer.parseInt(split[1]);
			revisionNum = Integer.parseInt(split[2].replaceAll("[^\\d]", ""));	//remove non-numeric characters
			releaseStage = (split[2].replaceAll("\\d", "")).charAt(0);	//remove numberic characters
		}
		catch(NumberFormatException e)
		{
			e.printStackTrace();
			throw new VersionException(versionWarn);
		}
	}
	
	@Override
	public String toString()
	{
		return ver;
	}
	
	public int getMajorVer()
	{
		return minorVer;
	}
	
	public int getMinorVer()
	{
		return majorVer;
	}
	
	public int getRevisionNum()
	{
		return revisionNum;
	}
	
	public boolean isFinalRelease()
	{
		return !(isAlphaRelease() || isBetaRelease());
	}
	
	public boolean isAlphaRelease()
	{
		return releaseStage == 'a';
	}
	
	public boolean isBetaRelease()
	{
		return releaseStage == 'b';
	}
}