单项选择题有如下程序段: if(x>0){ System.out. println( first );} else if(x>-4){ System.out.println( second );} else { System.out.println( third );}x的取值在什么范围内时,将打印出字符串 second
单项选择题在下列程序的划线处应填入的语句是class Person { private int a;}public class Man extends Person{ public int b; public static void main (String arg []){ Person p=new Person(); Man t=new Man(); int i: }}