public class Testww {
public String toString(){
return "CrashJava address :"+this+"\n";
}
public static void main(String []args){
Vector v=new Vector();
for(int i=0;i<10;i++){
v.addElement(new Testww());
System.out.print(v);
} }
“+"会将后面的东西(this)转换成一个字符串,调用toString()方法,将会出现递归调用,导致栈溢出