Question

java中为什么toString输出 数组类 的时候会出现乱码？

package a;

class aa
{
public String a;
public String b;
public aa(String a,String b){this.a=a;this.b=b;}
public String toString(){return a+" "+b;}
}

public class a
{
public static void main(String args[])
{
Object b[]=new aa[3];
b[0]=new aa("1","2");
b[1]=new aa("2","3");
b[2]=new aa("3","4");
for(int i=0;i<b.length;i++)
{
System.out.println(b.toString());
}
}
}
结果是：
[La.aa;@6996db8
[La.aa;@6996db8
[La.aa;@6996db8

Answer 1

System.out.println(Arrays.toString(数组));

Answer 2

b[i].toString()