1，随意，更象人类的语言 java: if(a == b) { System.out. ….//already forgotton? 🙁 } ruby: puts “it’s right!” if a == b 2，纯粹的OOP java: MyClass my = new MyClass(“param”); //’;’ required int i = Math.abs(-5); ruby: my = MyClass.new(“param”) #no ‘;’ required i = -5.abs #see, even -5 is an object 3，灵活 java: public String hello(String sir){ return…