请教java编程问题！紧急！！！

最近选修了最基础的java编程，刚开始尝试中。。。这周要交的一个作业不太会，麻烦高手们帮帮我！！！

Erstellen Sie ein Telefonverzeichnis (2 Punkte)
a) mit einem Array für die Speicherung von folgenden Namen und Telefonnummern.

String daten="Name: Bastian Schweinsteiger Telefonnr: 21321231";
String daten1="Name: Michael Ballack Telefonnr: 4324234";
String daten2="Name: Lukas Podolski Telefonnr: 4324351";

b) Schreiben Sie eigene Methoden für das Hinzufügen, Löschen und Ausgeben der Daten.

c) Loeschen Sie Michael Ballack aus dem Array

下面是我自己写的，但怎么运行都不对，希望会的同学尽快帮我改正，或者写个新的！！！拜托拜托了！！非常紧急！
class Person {
String name;
int phone;
}
class PhoneBook{
static Person[] book;
static int nEntries=0;

static void enter (String name, int phone){
if (nEntries>=book.length)
Out.println("-- phone book full, entry " + name + "ignored");
else{
book[nEntries] = new Person();
book[nEntries].name = name;
book[nEntries].phone = phone;
nEntries++;
}
}
static int delete(String name){
int i=0;
while (i<nEntries && !name.equals(book[i].name))
i++;
if(i == nEntries)
return -1;
else {book[i].name=null;book[i].phone=0;
return 0;}
}

static void printBook(){
for(int i =0; i <book.length;i++)
Out.println("Name: "+book[i].name+" Phone number: "+book[i].phone);
}

public static void main (String[] arg) {
book = new Person[10];
In.open("Telefonverzeichnis.txt");
String name=In.readString();
int phone;
while (In.done()){
phone =In.readInt();
enter(name,phone);
name =In.readString();
}
In.close();
printBook();
Out.println();

name=In.readString();
phone=In.readInt();
enter(name,phone);
Out.println();
Out.println();

for(;;){
name = "Michael Ballack";
phone=delete(name);
if (phone== -1)
Out.println(name + "unknown!");
else
Out.println("Phone number of "+ name +" ist deleted!");
Out.println();
Out.println();
printBook();
Out.println();
Out.println();}
}
}

错误信息是什么？

appears no mistakes, but the method 'delete' cannot be shown! why?

ni main li mian jia zhe ge gan sha? si xun huan?
for(;;){ ?
huo zhe wo kan cuo le?

bu ming bai ni wei sha yao zhe me xie a ...ni men lao shi zen me yao qiu de a .....
Erstellen Sie ein Telefonverzeichnis
jian li yi ge dian hua mu lu, na jiu shi ba ren ming he dian hua haoma jia jin qu.. ni wei sha yao da kai wen jian Telefonverzeichnis.txt? zhi jie jia ru hou zai java qian tai xian shi bu xing ma? wo zen me ya kan bu chu lai zhe ge ti yao cong yi ge wen jian da kai, ranhou zai zhe ge .txt li jia ru ranhou shan chu ne?
yin wei ru guo zhi jie zai java qian tai xian shi jie guo, duo jian dan a.....

mei you zhongwen.....cou he zhe kan ba......ru guo ni hai you shi jian jiu zai deng deng ba....shuo bu zhun wo huijia zhi hou shang yin, jiu gei ni code le

ru guo wo gei ni xie chu lai, qing ke chi fan ba?heihei
wen ge wenti, ni men java laoshi jiao sha?

引用:

---

作者: TriVector

错误信息是什么？

---

CCNA kao de zen me yang le? wo zhi dao ni shi shui le.......zai code li bian ru zi ji de mingzi,ju shuo ni asp bu cuo, ni tong wu lai, jiu shi nage ai kan nü ren wo zui da de nage qing dao xiao di

for(;;){
这里用了死讯欢乐。 我就不信不出错
Out.println();我这边出错！不知道你用的啥。。。code有些可以借鉴，而且写得挺简单的。。但是主程序里你要打开文件.txt什么的。。我这边用你的代码太多错误，花那个时间看你的错误还不如自己编个新的而且由于整个思维方式不是俺的，俺又失去java灵感了。:26:。都是颇sql弄得

这个是整个代码既有添加和删除的methoden, 那个array俺设成的是类的数组。。
而且也删除了那个micheln 就是代码里可能有冗余码。。
2分能给你1，5或者1分。。靠至少都运行了啊。。。用这个代码的话你们老师不给你分。。我在家诅咒他

/*
* Created on 2007-4-9
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package Test2;

/**
* @copyright
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class TesterLab02 {
public static void main(String[] args) {



Person [] p=new Person[3];LinkedList listTest2=new LinkedList();
p[0]=new Person("we","w","23w0w");

p[1]=new Person("2c "," 2d ", " 11-3-1999w1 ");

p[2]=new Person("Michael","Ballack","4324234");

listTest2.add(p[0]);listTest2.add(p[1]); listTest2.add(p[2]);
System.out.println(" ---------ADD Telephonnummer-------");
System.out.println(listTest2);
System.out.println(" ---------Loeschen Telephonnummer-------");
boolean l;
l=listTest2.remove(p[2]);
if(l) {System.out.println(p[2]+" geloescht \n ");
System.out.println("new Telephon Buch is ");}
else System.out.println(" nicht geloescht");
System.out.println(listTest2);


}




}

package Test2;
/*
* Created on 2007-4-8
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
/**
* @copyright
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class Person {

String firstName;
String lastName;
String telephon="";
Person(){
this("unknown", "unknown", "unknown");
}
Person(String firstName){
this(firstName, "unknown", "unknown");
}
Person(String firstName, String lastName){
this(firstName, lastName,"unknown");
}
Person(String firstName, String lastName, String telephon){
setFirstName(firstName);

setLastName(lastName);
setTelephon(telephon);
}
void setFirstName(String newfirstName){
this.firstName=newfirstName;
}
void setLastName(String newlastName){
this.lastName=newlastName;
}
void setTelephon(String newtelephon){
this.telephon=newtelephon;
}
String getFirstName(){
return firstName;
}
String getLastName(){
return lastName;
}
public String toString(){
return "\n" +
"firstName: " + firstName + " |\t\n" +
"lastName: " + lastName + " |\t\n" +
"Telephonnumer: " + telephon + " |\n";
}

}

package Test2;
/*
* Created on 2007-4-8
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
/**
* @copyright
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class ListItem {
Person item;
ListItem next;
ListItem prev;
public ListItem(Person item){
if(item!=null) this.item=item;// create newperson 赋值给当前item;
}
ListItem getNext(){
return next;
}
ListItem getPrev(){
return prev;
}
Person getItem(){
return this.item;
}
void setNext(ListItem newNext){
this.next=newNext;
}
boolean hasNext(){
if(next!=null)return true;
else return false;
}
boolean hasPrev(){
if(prev!=null)return true;
else return false;
}
public void setItem(Person item){
this.item = item;
}
void setPrev(ListItem newPrev){
this.prev=newPrev;
}
public String toString(){
return item.toString();
}

}