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作者 | 求教一个执行时的错误! |
spxrttn
发贴: 1 积分: 0 |
于 2007-07-01 16:30
我在JCreator中执行的程序编译没问题,但执行后出现 java.lang.NoSuchMethodError: main Exception in thread "main" Process completed. 这个错误提示,不知道什么原因,我在dos下能执行!这个问题经常出现,有人说是JDK设置问题,可我检查过了,根本没有问题。请高手赐教,谢谢! 程序代码如下: abstract class Animal{ String name; boolean mammal,carnivorous; int mood; Animal(String naMe,boolean maMmal,boolean caRnivorous,int moOd){ name=naMe; mammal=maMmal; carnivorous=caRnivorous; mood=moOd; } void isMammal(){ if (mammal==true){ System.out.println(name+"is Mammal !"); }else{ System.out.println(name+"isn't Mammal !"); } } void isCarnivorous(){ if (carnivorous==true){ System.out.println(name+"is Carnivorous !"); }else{ System.out.println(name+"isn't Carnivorous !"); } } void setMood(int newValue){ } void getMood(){ } void sayHello(){ } } class Dog extends Animal{ int numberOfLegs; Dog(String naMe,boolean maMmal,boolean caRnivorous,int moOd,int legs){ super(naMe,maMmal,caRnivorous,moOd); numberOfLegs=legs; this.isMammal(); this.isCarnivorous(); sayHello(); sayHello(mood); getMood(); LandAnimal objLand=new LandAnimalImplements(); objLand.getNumberOfLegs(this.name,numberOfLegs); System.out.println(); } void sayHello(){ System.out.println(name+"Under normal circumstances,And greet people in the form of:Shaking his tail"); } void sayHello(int newValue){ if (newValue==1){ System.out.println(name+"Been patted the mood is good,Greeted the way :Wang Wangwang"); }else if(newValue==0){ System.out.println(name+"Angry when: Bark"); }else{ System.out.println("Emotional input error"); } } void getMood(){ System.out.println(name+"Irritable when : Wuwuwu"); } } class Cat extends Animal{ int numberOfLegs; Cat(String naMe,boolean maMmal,boolean caRnivorous,int moOd,int legs){ super(naMe,maMmal,caRnivorous,moOd); numberOfLegs=legs; this.isMammal(); this.isCarnivorous(); sayHello(); sayHello(mood); LandAnimal objLand=new LandAnimalImplements(); objLand.getNumberOfLegs(this.name,numberOfLegs); System.out.println(); } void sayHello(){ System.out.println(name+"Under normal circumstances,And greet people in the form of:Meow meow"); } void sayHello(int newValue){ if (newValue==1){ System.out.println(name+"Been patted the mood is good : Grunt grunt call"); }else if (newValue==0){ System.out.println(name+"Angry when: Mao gave back"); }else{ System.out.println("Emotional input error"); } } } class Frog extends Animal{ int numberOfLegs; Frog(String naMe,boolean maMmal,boolean caRnivorous,int moOd,int legs){ super(naMe,maMmal,caRnivorous,moOd); numberOfLegs=legs; this.isMammal(); this.isCarnivorous(); sayHello(); sayHello(mood); WaterAnimal objWater=new WaterAnimalimplements(); objWater.hasGills(this.name); objWater.laysEggs(this.name); LandAnimal objLand=new LandAnimalImplements(); objLand.getNumberOfLegs(this.name,numberOfLegs); } void sayHello(){ System.out.println(name+"Under normal circumstances,Greeted the way : Guaguagu"); } void sayHello(int newValue){ if (newValue==1){ System.out.println(name+"Been patted the mood is good : Guaguagu call"); }else if (newValue==0){ System.out.println(name+"Angry when : Escape"); }else { System.out.println("Emotional input error"); } } } class Chicken extends Animal{ int numberOfLegs; Chicken(String naMe,boolean maMmal,boolean caRnivorous,int moOd,int legs){ super(naMe,maMmal,caRnivorous,moOd); numberOfLegs=legs; this.isMammal(); this.isCarnivorous(); sayHello(); sayHello(mood); WaterAnimal objWater=new WaterAnimalimplements(); objWater.hasGills(this.name); objWater.laysEggs(this.name); LandAnimal objLand=new LandAnimalImplements(); objLand.getNumberOfLegs(this.name,numberOfLegs); } void sayHello(){ System.out.println(name+"Under normal circumstances,And greet people in the form of : Woo Oh"); } void sayHello(int newValue){ if (newValue==1){ System.out.println(name+"Been patted the mood is good,Greeted the way :Woo Oh Call"); }else if (newValue==0){ System.out.println(name+"When the shock when : Ascended to the roof"); }else { System.out.println("Emotional input error"); } } } public class AnimalDemo{ public static void main (String[] args){ Dog obj01=new Dog("Dog",true,true,1,4); Cat obj02=new Cat("Cat",true,true,1,4); Frog obj03=new Frog("Frog",false,false,1,4); Chicken obj04=new Chicken ("Chicken",false,false,1,2); } } 接口如下2个文件: public interface WaterAnimal{ public void hasGills(String name); public void laysEggs(String name); } public interface LandAnimal{ public void getNumberOfLegs(String name,int numberOfLegs); } 接口实现文件: class LandAnimalImplements implements LandAnimal{ public void getNumberOfLegs(String name,int numberOfLegs){ System.out.println(name+""+numberOfLegs+""); } } class WaterAnimalimplements implements WaterAnimal{ public void hasGills(String name){ System.out.println(name+""); } public void laysEggs(String name){ System.out.println(name+""); } } 还有1个问题,就是我用中文关闭文件再打开就成乱码了,有没有方法支持中文! 菜鸟请教,基本程序调试不通,急急急急急急!!! |
话题树型展开 |
人气 | 标题 | 作者 | 字数 | 发贴时间 |
5896 | 求教一个执行时的错误! | spxrttn | 8561 | 2007-07-01 16:30 |
4644 | Re:求教一个执行时的错误! | tkzht0105 | 20 | 2007-07-07 16:52 |
5244 | Re:求教一个执行时的错误! | Cappuccino | 23 | 2007-07-08 04:00 |
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