Java “线程中的异常”;“主要”;需要快速解决吗
我需要为河内塔游戏编写这段代码,我有一些部分是给定的,因此它们必须是那样(我不一定同意,但无论如何),我用匈牙利语工作,所以一些单词也是匈牙利语,但我不认为它们会给理解代码带来问题。 我得到的错误是: 编辑:添加了一些注释以查找错误“我的坏”Java “线程中的异常”;“主要”;需要快速解决吗,java,exception,Java,Exception,我需要为河内塔游戏编写这段代码,我有一些部分是给定的,因此它们必须是那样(我不一定同意,但无论如何),我用匈牙利语工作,所以一些单词也是匈牙利语,但我不认为它们会给理解代码带来问题。 我得到的错误是: 编辑:添加了一些注释以查找错误“我的坏” Exception in thread "main" EmptyTowerException at HanoiTower.pop(HanoiTower.java:49) at HanoiSimulator.move(HanoiSimulat
Exception in thread "main" EmptyTowerException
at HanoiTower.pop(HanoiTower.java:49)
at HanoiSimulator.move(HanoiSimulator.java:58)
at HanoiSimulator.main(HanoiSimulator.java:72)
这是我的代码:
import java.util.Scanner;
public class HanoiSimulator {
public HanoiTower elso = new HanoiTower();
public HanoiTower masodik = new HanoiTower();
public HanoiTower harmadik = new HanoiTower();
public HanoiSimulator(int x) throws InvalidMoveException {
for (int i = x; i > 0; i--) {
elso.put(x);
x-=1;
}
}
public boolean isFinished(){
boolean win = false;
if(masodik.korongSzam == 3)
{
win = true;
}
else{
win = false;
}
return win;
}
public boolean move(int from, int to) throws EmptyTowerException, InvalidMoveException {
HanoiTower A = new HanoiTower();
HanoiTower B = new HanoiTower();
System.out.println(elso);
//System.out.println(A);
if (from == 1) {
A = elso;
System.out.println(A);
}
else {
if (from == 2) {
A = masodik;
}
else {
A = harmadik;
}
}
if (to == 1) {
B = elso;
}
else {
if (to == 2) {
B = masodik;
}
else {
B = harmadik;
}
}
int x = A.pop(); //ERROR 2
B.put(x);
return true;
}
public static void main(String[] args) throws InvalidMoveException, EmptyTowerException {
HanoiSimulator simulator = new HanoiSimulator(4);
Scanner sc=new Scanner(System.in);
while(!simulator.isFinished()) {
System.out.println(simulator);
System.out.print("Which tower should I take the top disk from? (1-3) ");
int from = sc.nextInt();
System.out.print("On which tower should I put it down? (1-3) ");
int to = sc.nextInt();
if(simulator.move(from,to)) System.out.println("Move successful."); //ERROR 3
else System.out.println("This move can not be carried out.");
}
System.out.println("Congrats, you win. You've just brought the end of the world. Thanks.... -.-");
}
}
这是HanoiTower的课程:
import java.util.Arrays;
class EmptyTowerException extends Exception {
}
class InvalidMoveException extends Exception {
}
public class HanoiTower {
private int magassag = 10;
private int[] Torony = new int[magassag];
public int korongSzam;
@Override
public String toString() {
return "HanoiTower{" +
"magassag=" + magassag +
", Torony=" + Arrays.toString(Torony) +
", korongSzam=" + korongSzam +
'}';
}
public HanoiTower() {
for (int i = 0; i < Torony.length; i++) {
Torony[i] = 0;
}
}
public HanoiTower(int h) {
for (int i = 0; i < h; i++) {
magassag = h;
Torony[i] = h-i;
}
}
public int pop() throws EmptyTowerException {
int meret=0;
for (int i = magassag-1; i < -1; i--) {
if (Torony[i] > 0) {
meret = Torony[i];
Torony[i] = 0;
break;
}
}
if(meret == 0){
throw new EmptyTowerException(); // ERROR 1
}
else {
return meret;
}
}
public void put(int size) throws InvalidMoveException {
for (int i = 0; i < Torony.length ; i++) {
if(Torony[i] == 0) {
Torony[i] = size;
korongSzam +=1;
break;
}
else
if(Torony[i] < size)
throw new InvalidMoveException();
}
//System.out.println(Arrays.toString(Torony));
}
public static void main(String[] args) {
HanoiTower test= new HanoiTower();
try{
test.pop();
System.err.println("[ERROR] pop succesful from empty tower");
} catch (EmptyTowerException e){
System.err.println("[OK] pop unsuccesful from empty tower");
}
try{
test.put(6);
System.err.println("[OK] put 6 succesful on empty tower");
} catch (InvalidMoveException e){
System.err.println("[ERROR] put 6 succesful on empty tower");
}
try{
test.put(4);
System.err.println("[OK] put 4 succesful on tower [6]");
} catch (InvalidMoveException e){
System.err.println("[ERROR] put 4 succesful on tower [6]");
}
try{
test.put(1);
System.err.println("[OK] put 1 succesful on tower [6 4]");
} catch (InvalidMoveException e){
System.err.println("[ERROR] put 1 succesful on tower [6 4]");
}
try{
test.put(2);
System.err.println("[ERROR] put 2 succesful on tower [6 4 1]");
} catch (InvalidMoveException e){
System.err.println("[OK] put 1 succesful on tower [6 4 1]");
}
System.out.println(Arrays.toString(test.Torony));
}
}
导入java.util.array;
类EmptyTowerException扩展了异常{
}
类InvalidMoveException扩展异常{
}
公营汉诺通{
私人int magassag=10;
private int[]Torony=新int[magassag];
公共国际科隆赞酒店;
@凌驾
公共字符串toString(){
返回“HanoiTower{”+
“magassag=“+magassag+
“,Torony=“+Arrays.toString(Torony)+
“,korongSzam=“+korongSzam+
'}';
}
公共汉诺通电力公司(){
for(int i=0;i0){
梅雷特=托罗尼[i];
Torony[i]=0;
打破
}
}
if(meret==0){
抛出新的EmptyTowerException();//错误1
}
否则{
返回梅雷特;
}
}
公共void put(int size)引发InvalidMoveException{
for(int i=0;i
我在您的代码中发现了问题。
应该是:
i > -1
代替
i < -1
我还建议在抛出异常时处理它,并告诉用户更改他们的选择。祝你好运:)@MarsAtomic我想这就是例外情况的全文。@Andy Turner是的,我知道他在做什么。@MarsAtomic我的不好,我添加了一些带有错误的评论,但你也必须明白,我只是一个受教育不够的学生,我受的教育足够多,大学里没有人能够或试图帮助我(包括老师).以我所掌握的知识,我不可能自己解决这个问题。从
A.pop()
中捕获异常,并返回false作为handler.omg不敢相信我错过了,我已经坐了一个小时了,但我太累了,谢谢你
public int pop() throws EmptyTowerException {
int meret=0;
for (int i = magassag-1; i > -1; i--) {
if (Torony[i] > 0) {
meret = Torony[i];
Torony[i] = 0;
break;
}
}
if(meret == 0){
throw new EmptyTowerException(); // ERROR 1
}
else {
return meret;
}
}