public class Car {
public static Integer havePedalNum(int pedalNum) { return pedalNum;

} public static String havePedalNum(String name, int pedalNum)
{ return name + "有" + pedalNum; }

public static void main(String[] args) {

System.out.println("所有的汽车至少有" +

havePedalNum(2) + "块脚踏板");

System.out.println("但" + havePedalNum("手动挡汽

车", 3) + "块脚踏板"); } }