想破坏也破坏不了

    • java.lang.String
    • java.math.BigInteger
    • java.util.regex.Pattern
    • java.lang.Integer

    1. public class Main{
    2.     public static void main(Stirng[] args){
    3.         Person alice = new Person("Alice","Alaska");
    4.         new PrintPersonThread(alice).start;
    5.         new PrintPersonThread(alice).start;
    6.         new PrintPersonThread(alice).start;
    7.     }
    8. }