public void testIfA(){
if(testIfB("True")){
System.out.println("True");
}else{
System.out.println("Nottrue");
}
}
public Boolean testIfB(Stringstr){
return Boolean.valueOf(str);
}
What is the result when method testIfA is invoked?()
public void testIfA(){
if(testIfB("True")){
System.out.println("True");
}else{
System.out.println("Nottrue");
}
}
public Boolean testIfB(Stringstr){
return Boolean.valueOf(str);
}
What is the result when method testIfA is invoked?()
public static void main(String[]args){
for(inti=0;i<=10;i++){
if(i>6)break;
}
System.out.println(i);
}
What is the result?()
现有:
interface Data {public void load();}
abstract class Info {public abstract void load();}
下列类定义中正确使用Data和Info的是哪项?()
class java {
public static void main(String [] java) {
for (int Java = 1; Java 〈 java.length; Java++)
System.out.print("java ");
}
}
和命令行:
java java java java java
结果为:()
下面可作为public void aMethod(){...}重载方法的是( )。
给出下列java源代码:
//Point x
Public class Interesting{}
在源代码//point x处添加()能符合java语法
阅读以下代码:
public class Test{
public static void main(){
System.out.println(“x=”+x); } }
请问,代码运行的结果是?()
1. class Pizza {
2. java.util.ArrayList toppings;
3. public final void addTopping(String topping) {
4. toppings.add(topping);
5. }
6. }
7. public class PepperoniPizza extends Pizza {
8. public void addTopping(String topping) {
9. System.out.println(”Cannot add Toppings”);
10. }
11. public static void main(String[] args) {
12. Pizza pizza = new PepperoniPizza();
13. pizza.addTopping(”Mushrooms”);
14. }
15. }
What is the result?()
1. public class SimpleCalc {
2. public int value;
3. public void calculate() { value += 7; }
4. }
And:
1. public class MultiCalc extends SimpleCalc {
2. public void calculate() { value -= 3; }
3. public void calculate(int multiplier) {
4. calculate();
5. super.calculate();
6. value *=multiplier;
7. }
8. public static void main(String[] args) {
9. MultiCalc calculator = new MultiCalc();
10. calculator.calculate(2);
11. System.out.println(”Value is: “+ calculator.value);
12. }
13. }
What is the result?()
在J2EE中,有如下代码在Servlet1.Java中
Import javax.servlet.*;
Import javax.servlet.http.*
Import java.io.IOException;
Import java.io.PrintWriter;
Public class Servlet1 extends HttpServlet{
Public void init () throw ServletException {}
Public void service(HttpServletRequest request,
HttpServletResponce response) throws ServletException,IOException{
PrintWriter out=response.getWriter();
Out.println(“hello!”); } }
假如编译Servlet要具备的环境都已经建立好。现在用完全正确的命令编译该文件,对于以下成熟正确的是()
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