Java基础知识英文选择题1——Basic of Java Programs.

1. Which method must exist in every java application?

A. main

B. paint

C. begin

D. init

2.What's the right way to handle abnormalities in input on java?

A. By handling these problems by providing exception handlers.

B. By writing whileloops to guard against bad input.

C. By using the class FileFilter which gracrfully filters out bad input data.

D. By always specifying the throws clause in every method header where file i/o is performed.

3. The name of a java source file ___?

A. must be the same as the class it defines, respecting case.

B. has no restrictions.

C. must use the extension class.

D. must be the same as the class it defines, ignoring case.

4. A difference between the methods "print" and "println" of the class java.io.printwriter is that __?

A. "print" inserts a new line at the beginning of its output, but "println" does not.

B. "println" appends a new line to the end of its output, but "print" does not.

C. "println" inserts a new line at the beginning of its output, but "print" does not.

D. "print" appends a new line to the end of its output, but println does not.

5. A tool that allows programmers to execute lines of a program one line at a time in order to help locate the source of a program's errors is known as a(n) __?

A. debugger.

B. scope.

C. exception handler.

D. stack trace.

6. Classes from which of the following packages are implicitly imported into every Java program?

A. java.awt

B. java.io

C. java.lang

D. java.util

7. Which of the following statements is(are) true about the use of an asterisk(*) in a java import statement?

i.It does not incur run-time overhead.

ii. It can be used to import multiple packages with a single statement.

iii. It can be used to import multiple classes with a single statement.

A. i and iii only

B. iii only

C. i only

D. i, ii and iii

8. Which of the follwing is the string concatenation operator in java?

A. +

B. ^

C. &

D. ++

9. What will be output when the following java program segment is executed?

int x = 5;int y = 2;System.out.println(x + y);

A. 7

B. 5 2

C. 5 + 2

D. 52

10. What will be output caused by the execution of the following java program segment?

String name = "elvis";System.out.print(name + "was here");

A. name + was here

B. elvis was here

C. name was here

D. elviswas here

（部分题目来源于网络，如有侵权，请联系文章作者删除。）

Java基础知识英文选择题1——Basic of Java Programs.相关推荐

Java基础知识（重点）总结（Java学习方法、系统学习路线）
参考:https://www.cnblogs.com/schiller-hu/p/10662429.html Java自学网:https://www.51zxw.net/list.aspx?cid=3 ...
Java基础知识复习(一)
Java基础知识复习(一) 目录 Java简介命名规则八种基本的数据类型字面量类型转换变量的形态逻辑运算符位运算移位运算习题知识点目录 Java简介 Java是由Sun公司在199 ...
Java基础知识(四) 基本类型与运算
Java基础知识基本类型与运算 1. Java提供了哪些基本数据类型 2. 什么是不可变类 3. 值传递与引用传递的区别 4. Math类中的round.ceil和floor方法的功能各是什么 5. ...
【转】Java基础知识整理
本博文内容参考相关博客以及<Java编程思想>整理而成,如有侵权,请联系博主. 转载请注明出处:http://www.cnblogs.com/BYRans/ PDF版下载链接:<Ja ...
【转】java基础知识总结
Java基础知识总结本博文内容参考相关博客以及<Java编程思想>整理而成,如有侵权,请联系博主. 转载请注明出处:http://www.cnblogs.com/BYRans/ PDF版 ...
Java基础知识(七) 输入输出流
Java基础知识输入输出流 1. Java IO流的实现机制是什么 2. 管理文件和目录的类是什么 3. Java Socket是什么 4. Java NIO是什么 5. 什么是Java序列化 6. ...
java（5）---Java基础知识大全
Java基础知识大全一.基础知识: 1.JVM.JRE和JDK的区别: JVM(Java Virtual Machine):java虚拟机,用于保证java的跨平台的特性. java语言是跨平 ...
java基础知识之初识java
java基础知识之初识java JAVA基础课后总结一 1.计算机程序定义:程序(Program)是为实现特定目标或解决特定问题而用计算机语言编写的命令序列的集合. 2.指令定义:指令就是指示机 ...
java基础知识学习小总结（一）
此文转载自:https://blog.csdn.net/weixin_44734093/article/details/109715246 什么是java Java是一门面向对象编程语言,不仅吸收了C ...

Java基础知识英文选择题1——Basic of Java Programs.

Java基础知识英文选择题1——Basic of Java Programs.相关推荐

最新文章

热门文章