public class HelloWorld{ public static void mian(String[] args){ int one = 10; int two = 20; int three = 0; three = one + two; System.out.println("three = two + one" + three ); three += one ; System.out.println("three += one" + three ); three -= one ; System.out.println("three -= one" + three ); three *= one ; System.out.println("three *= one" + three ); three /= one ; System.out.println("three /= one" + three ); three %= one ; System.out.println("three %= one" + three ); }}D:\liujiahao>javac HelloWorld.javaD:\liujiahao>java HelloWorld錯誤: 在類 HelloWorld 中找不到主方法, 請將主方法定義為:? ?public static void main(String[] args)D:\liujiahao>java HelloWorld錯誤: 在類 HelloWorld 中找不到主方法, 請將主方法定義為:? ?public static void main(String[] args)