
Java_A
Quiz
•
Computers
•
1st Grade
•
Hard
Shiwen Zhang
Used 6+ times
FREE Resource
29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
1. 下列选项中,( )是 JDK 提供的编译器。
A. java.exe
B. javac.exe
C. javaw.exe
D. javap.exe
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
下列叙述错误的是( )。
A. System 是关键字。
B. _class 可以作为标识符。
C. Char 型字符在 Unicode 表中的位置范围为 0-65535。
D. 对于“int a[] = new int[5];”,a.length 的值是 5。
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
3. 对于 int[][] a = {{1,2},{1,2,3},{1,2,3,4}}; 下列叙述错误的是( )
A. a.length 的值是3
B. a[2].length 的值是 4。
C. a[0][1]的值是 1。
D. a[2][0]的值是 1。
4.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
4. 对于“int n = 5678;”,表达式的值为 6 的是( )。
A. n%10
B. n/10%10
C. n/100%10
D. n/1000%10
5.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
5. 对于 Test.java,下列叙述正确的是( )。
public class Test{
public static void main(String[] args){
boolean boo = false;
if(boo == true){
System.out.print(“Hello”);
System.out.print(“你好”); }
else{
System.out.print(“ok”);
System.out.print(“yes”); } } }
A. 出现编译错误。
B. 程序的输出结果是 hello 你好。
C. 程序的输出结果是 ok。
D. 程序的输出结果是 okyes。
6.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
6. 下列叙述正确的是( )
A.成员变量有默认值。
B. this 可以出现在 static 方法中。
C. 类中的实例方法可以用类名调用。
D. 局部变量也可以用权限修饰符 public、protected、private 修饰。
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
7. 对于下列代码,叙述正确的是( )。
public class Test{
public static void main(String[] args){
Tom cat = new Tom(); } }
class Tom{
void Tom(){
System.out.println(“ok”); }
Tom(){
System.out.println(“你好”); } }
A. 程序运行时输出:ok。
B. 有两个构造方法。
C. 有编译错误。
D. 程序运行时输出:你好。
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