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这里是我的任务如何创建中getAllNames将在另一个类
you need to create array of users and print there names.
然后,你需要创建一个多类UsersStorage与所有用户名返回字符串,将上述用户的阵列这一类提到的,所以你会保持这个数组在课堂内。
来实现这种类方法getFirstUserName,将返回第一用户和中getAllNames将与所有用户名返回字符串。
和我的代码
package com.company;
public class Lesson4OOP {
public static void main(String[] args) {
String[] names = {"Adam","Sara", "Mike" , "David"};
int[] ages = {21, 25, 34, 16};
UserStorage[] users = new UserStorage[names.length];
for(int i = 0; i<users.length; i++){
UserStorage u = new UserStorage();
u.setName(names[i]);
users[i] = u;
u.setAllNames(names);
}
System.out.println();
for(int j = 0; j<ages.length; j++){
users[j].setAge(ages[j]);
}
System.out.print(users[2].getName());
System.out.println(" is " + users[3].getAge() + " years old");
System.out.print(names.getAllNames());
}
}
package com.company;
public class UserStorage {
String nam;
int ages;
static String[] names = {"Adam","Sara", "Mike" , "David"};
String separator = "";
public void setName(String val){
nam = val;
}
public String getName(){
return nam;
}
public void setAge(int num){
ages = num;
}
public int getAge(){
return ages;
}
public static void setAllNames(String[] getN){
names = getN;
}
public String[] getAllNames(){
for (int i = 0; i<names.length; i++){
System.out.print(separator + names[i]);
separator = ", ";
}
return names;
}
}
哪里出错?由于输出是 错误:(21,31)的java:找不到符号 符号:法中getAllNames() 位置:类型的变量名java.lang.String中[]
您呼叫'在字符串数组名names.getAllNames()',而不是UserStorage – Optional