小程序编译不通,帮忙纠错!
public class Test {
public static void main (String [] args){
Test test = new Test();
int data = 9;
BirthData d1 = new BirthData(7,7,1970);
BirthData d2 = new BirthData(1,1,2000);
test.change1(date);
test.change2(d1);
test.change3(d2);
System.out.println("date = " + date);
}
public void change1(int i){
i =1234;
}
public void change2(BirthData b){
b = new BirthData(22,2,2004);
}
public void change3(BirthData b){
b.setDay(22);
}
}
以上为谢。