请高手帮我调试下面，最好能解释一下。送100分，不成敬意，谢谢！

[ashui11]

class CustomerCareExecutive{
String executiveName;
int rating;
public void displayDetails(){
System.out.println(executiveName);
System.out.println(rating);
}
}
public class ExecutiveCollection {
CustomerCareExecutive exObjects[];
ExecutiveCollection(){
for(int ctr=0;ctr!=3;ctr++){
exObjects[ctr]=new CustomerCareExecutive();
}
exObjects[0].executiveName="Smart Cells Inc";
exObjects[0].rating=Integer.parseInt("30+40");
exObjects[1].executiveName="AlkaTel";
exObjects[1].rating=85;
exObjects[2].executiveName="CellTalk Inc";
exObjects[2].rating=60;
}
public void displayCollection(){
for(int ctr=0;ctr!=3;ctr++){
exObjects[ctr].displayDetails();
}
}
public static void main(String arg[]){
ExecutiveCollection collectionObj;
collectionObj=new ExecutiveCollection();
collectionObj.displayCollection();
System.out.println("All Records displayed");
}
}

[wli]

ExecutiveCollection.exObjects 没有new出来

[loveyousomuch]

CustomerCareExecutive exObjects[];
exObjects[]这个对象数组没有实例化！

[swinging]

CustomerCareExecutive exObjects[] = new CustomerCareExecutive[3];

[whyxx]

CustomerCareExecutive exObjects[] = new CustomerCareExecutive[3];

[flyingjm]

exObjects[0].rating=Integer.parseInt("30+40");这一句也有问题，exObjects.rating值肯定不会是70，而且这一句要产生异常。Integer.parseInt(String s)其中s的各个组成部分必须全部是十进制数字，但第一位可以是-表示负数。exObjects[0].rating=Integer.parseInt("70");应该就没问题了。还有就是楼上各位说的初始化问题了。

[prosong]

class CustomerCareExecutive{
String executiveName;
int rating;
public void displayDetails(){
System.out.println(executiveName);
System.out.println(rating);
}
}
public class ExecutiveCollection {
CustomerCareExecutive exObjects[] = new CustomerCareExecutive[3]; // Modified
ExecutiveCollection(){
for(int ctr=0;ctr!=3;ctr++){
exObjects[ctr]=new CustomerCareExecutive();
}
exObjects[0].executiveName="Smart Cells Inc";
exObjects[0].rating=Integer.parseInt("30"); // Modified
exObjects[1].executiveName="AlkaTel";
exObjects[1].rating=85;
exObjects[2].executiveName="CellTalk Inc";
exObjects[2].rating=60;
}
public void displayCollection(){
for(int ctr=0;ctr!=3;ctr++){
exObjects[ctr].displayDetails();
}
}
public static void main(String arg[]){
ExecutiveCollection collectionObj;
collectionObj=new ExecutiveCollection();
collectionObj.displayCollection();
System.out.println("All Records displayed");
}
}