表达式-0.0==0.0的结果为true
表达式-0.0==0.0的结果为true
相关考题:
Assume a tag handler extends TagSupport. Which is used within the tag handler to get an attribute “foo” that is in the application scope?()A、 pageContext.getAttribute(“foo”);B、 getPageContext().getAttribute(“foo”);C、 pageContext.getApplicationScope(“foo”);D、 pageContext.getAttribute(“foo”,pageContext.APPLICATION_SCOPE).getAttribute(“foo”);E、 getPageContext().getScope(pageContext.APPLICATION_SCOPE).getAttribute(“foo”);
public class X implements Runnable ( private int x; private int y; public static void main(String args) ( X that = new X(); (new Thread(that)) . start( ); (new Thread(that)) . start( ); ) public synchronized void run( ) ( for (;;) ( x++; y++; System.out.printIn(“x = “ + x + “, y = “ + y); ) ) ) What is the result?()A、 An error at line 11 causes compilation to fail.B、 Errors at lines 7 and 8 cause compilation to fail.C、 The program prints pairs of values for x and y that might not always be the same on the same line (for example, “x=2, y=1”)D、 The program prints pairs of values for x and y that are always the same on the same line (forexample, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=1, y=1”)E、 The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by “x=2s, y=2”)
for循环的一般形式为: for(初值;终值;增量) 一下对for循环的描述中,正确的是()A、初值、终值、增量必须是整数B、for寻找的次数是由一个默认的循环变量决定C、for循环是一种计次循环,每个for循环都带有一个内部不可见循环变量,一控制for循环次数D、初值和增量都是赋值语句,终值是条件判断语句
下面关于ICMP协议的描述中,正确的是()。A、ICMP协议根据MAC地址查找对应的IP地址B、ICMP协议把公网的IP地址转换为私网的IP地址C、ICMP协议用于控制数据报传送中的差错情况D、ICMP协议集中管理网络中的IP地址分配
程序中实现多线程的方法有两种:继承Thread类和实现()接口。