从末尾提取顶级类名称剪切“ .java”。

//nowjava.com - 时代Java 提 供


//package com.nowjava;

import java.io.File;


public class Main {

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

        String sourceFile = "nowjava.com";

        System.out.println(getTopLevelClassName(sourceFile));

    }


    /**

     * Extract top level class name cutting ".java" from the end.

     *

     * @param   sourceFile

     *

     * @return

     */

    public static String getTopLevelClassName(final String sourceFile) {

        String className = sourceFile.substring(0, sourceFile.length() - 5);