单项选择题
现有:
public class Tester {
public static void main (String[] args) {
intx-5;
Integer xl=x; Integer x2=x;
int x3=new Integer(5);
system..ut.print(x1.equals(x));
system..ut.print(xl==x);
system..ut.print(x2.equals(xl));
system..ut.print(x2==xl);
system..ut.print(x2==x3);
system..ut.print(x2.equals(x3));
}
}
结果为:()
A.编译失败
B.falsefalsetruetruetruetrue
C.truetruetruetruetruetrue
D.falsefalsetruetruetruefalse
E.truefalsetruefalsefalsetrue
F.运行时异常被抛出