argutil.java

来自「java 的源代码」· Java 代码 · 共 27 行

package com.reddragon2046.base.utilities.util;


public class ArgUtil
{

    public ArgUtil()
    {
    }

    public static String trimmedOptionalArg(String arg)
    {
        return arg != null ? arg.trim() : null;
    }

    public static String trimmedArg(String arg)
    {
        if(arg == null)
            throw new IllegalArgumentException("null passed for mandatory argument");
        String trimmed = arg.trim();
        if(trimmed.length() == 0)
            throw new IllegalArgumentException("mandatory argument cannot be empty");
        else
            return trimmed;
    }
}