为什么编译时会出非法向前引用的错误
class Cat{
public String name;
public int age;
public Cat(String name,int age){
System.out.println( "Constructor ");
this.name = name;
this.age = age;
}
{
System.out.println( "non-static initial block ");
// 这边为什么不报向前引用的错误
weight = 2.0;
// 注释下面的语句编译可以通过
[color=#FF0000]System.out.println(weight);[/color] }
double weight =2.3 ;
public String toString(){
return "Cat[name= " + name + " ,age= " + age + " ,weight= " + weight;
}
}
public class InitTest{
public static void main(String[] args){
Cat cat = new Cat( "kitty ",2);
System.out.println(cat);
Cat c2 = new Cat( "Jefi ",3);
System.out.println(c2);
}
}
[解决办法]
这是JAVA代码块
http://blog.csdn.net/lichaohn/article/details/5359240
