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多选题
在Java中,关于CLASSPATH环境变量的说法,正确的有()。
A
CLASSPATH一旦设置就不可修改,但可以将目录添加到该环境变量中
B
编译器用它来搜索各自的类文件
C
CLASSPATH是一个目录列表
D
解释器用它来搜索各自的类文件
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path用来指定java虚拟机(JVM)所在的目录B
classpath用来指定我们自己所写的或要用到的类文件(.jar文件)所在的目录C
在dos命令行中,classpath和path环境变量的查看与配置的方式不相同D
只要设置了classpath这个环境变量系统就不会再在当前目录下查询某个类
考题
单选题在J2EE中,对于JSP文件中要使用的类,Web容器()寻找这些类。A
容器会查找web-inf目录中的类,如果没有要到环境变量classpath中寻找B
容器会查找servlet 中的类,如果没有要到环境变量classpath中寻找C
容器会查找classes中的类和lib目录中jar文件中的类,如果没有要到环境变量classpath中查找D
容器会查找classes中的类和lib目录中jar文件中的类,如果找不到会报错
考题
单选题下列关于classpath环境变量的说法中,哪一个是正确的()。A
classpath配置一次后可永久使用B
没有classpath环境变量就不能运行Java程序C
classpath环境变量可以让虚拟机找到class文件的目录D
查看当前classpath配置的命令是:classpath
考题
单选题A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command:java games.cards. Poker What allows the user to do this?()A
put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/javaB
put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/java/*.jarC
put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/java/Poker.jarD
put Poker.jar in directory /stuff/java/games/cards, and set the CLASSPATH to include /stuff/java
考题
单选题下面关于classpath的说法中,错误的是()。A
classpath和path环境变量的查看与配置的方式完全相同。B
为了让Java虚拟机能找到所需的class文件,就需要对classpath环境变量进行设置。C
从JDK5.0开始,如果classpath环境变量没有进行设置,Java虚拟机会自动将其设置为“.”,也就是当前目录。D
在命令行窗口中配置了classpath后,重新打开新命令行窗口依然生效
考题
单选题A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command: java games.cards.Poker What allows the user to do this?()A
put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/javaB
put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/java/*.jarC
Put Poker.jar in directory /stuff/java, and set the CLASSPATH to include /stuff/java/Poker.jarD
put Poker.jar in directory /stuff/java/games/cards, and set the CLASSPATH to include /stuff/javaE
put Poker.jar in directory /stuff/java/games/cards, and set the CLASSPATH to include /stuffijava/*.jarF
put Poker.jar in directory /stuff/java/games/cards, and set the CLASSPATH to include /stuff/java/Poker.jar
考题
问答题假设已编写好了类Class1:packagemypackage;publicclassClass1{……}它存在Class1.java文件中。现在main方法所在的源程序MainPro.java如下:importmypackage;……假设操作系统中的CLASSPATH环境变量已被设成"c:/java/lib/classes.zip;.;",而main方法所在的源程序MainPro.java存在目录c:/mydir中(当前工作目录为c:/mydir),那么Class1.class文件应存放在那个目录中呢?
考题
单选题在Java中,关于CLASSPATH环境变量的说法不正确的是()。A
CLASSPATH一旦设置之后不可修改,但可以将目录添加到该环境变量中。B
编译器用它来搜索各自的类文件。C
CLASSPATH是一个目录列表。D
解释器用它来搜索各自的类文件。
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