问问大牛们为什么报错,空指针!
xuesjihe初始化过了,为什么还是会报错啊
public class Xuesjihe {
public static Map<String,Xues> xsjh;
public Xuesjihe() {
this.xsjh=new HashMap<String,Xues>();
}
xuesjihe初始化过了,为什么还是会报错啊
public class Xuesjihe {
public static Map<String,Xues> xsjh;
public Xuesjihe() {
this.xsjh=new HashMap<String,Xues>();
}
2019-05-25
举报