麻烦问一下这个程序错在哪里
import java.util.ArrayList;public class Trans {
public static void main(String[] args){
ArrayList<Dog> list=new ArrayList<Dog>();
dog1=new Dog(name1);
list.add(dog1);
}
}
class Bird{
String bname;
public Bird(String name){
this.bname=name;
}
}
class Dog{
String dname;
public Dog(String name1){
this.dname=name1;
}
}
import java.util.ArrayList;public class Trans {
public static void main(String[] args){
ArrayList<Dog> list=new ArrayList<Dog>();
dog1=new Dog(name1);
list.add(dog1);
}
}
class Bird{
String bname;
public Bird(String name){
this.bname=name;
}
}
class Dog{
String dname;
public Dog(String name1){
this.dname=name1;
}
}
解决方案 »
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- 请高手帮忙定义一个类,实现如下模型:
public static void main(String[] args) {
ArrayList<Dog> list = new ArrayList<Dog>();
Dog dog1 = new Dog("wanwan");
list.add(dog1);
}
}class Bird {
String bname; public Bird(String name) {
this.bname = name;
}
}class Dog {
String dname; public Dog(String name1) {
this.dname = name1;
}
}
name1没有声明为字符串,应为String name1 = "声明的名称";
dog1没有声明,应为Dog dog1 = new Dog(name1);
public static void main(String[] args){
String name1 =null;
ArrayList <Dog> list=new ArrayList <Dog>();
Dog dog1=new Dog(name1);
list.add(dog1);
}
}
class Bird{
String bname;
public Bird(String name){
this.bname=name;
}
}
class Dog{
String dname;
public Dog(String name1){
this.dname=name1;
}
}
dog1=new Dog(name1);应该是Dog dog1= new Dog("name1");