Java Questions & Answers – Environment Properties

This set of Java Multiple Choice Questions & Answers (MCQs) focuses on “Environment Properties”.

1. Which object Java application uses to create a new process?
a) Process
b) Builder
c) ProcessBuilder
d) CreateBuilder
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2. Which of the following is true about Java system properties?
a) Java system properties are accessible by any process
b) Java system properties are accessible by processes they are added to
c) Java system properties are retrieved by System.getenv()
d) Java system properties are set by System.setenv()
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3. Java system properties can be set at runtime.
a) True
b) False
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4. Which system property stores installation directory of JRE?
a) user.home
b) java.class.path
c) java.home
d) user.dir
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5. What does System.getProperty(“variable”) return?
a) compilation error
b) value stored in variable
c) runtime error
d) null
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6. What is true about the setProperties method?
a) setProperties method changes the set of Java Properties which are persistent
b) Changing the system properties within an application will affect future invocations
c) setProperties method changes the set of Java Properties which are not persistent
d) setProperties writes the values directly into the file which stores all the properties
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7. How to use environment properties in the class?
a) @Environment
b) @Variable
c) @Property
d) @Autowired
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             @Autowired
	     private Environment env;

8. How to assign values to variable using property?
a)

@Value("${my.property}")
private String prop;

b)

@Property("${my.property}")
private String prop; 

c)

@Environment("${my.property}")
private String prop;

d)

@Env("${my.property}")
private String prop;

9. Which environment variable is used to set java path?
a) JAVA
b) JAVA_HOME
c) CLASSPATH
d) MAVEN_HOME
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10. How to read a classpath file?
a) InputStream in = this.getClass().getResource(“SomeTextFile.txt”);
b) InputStream in = this.getClass().getResourceClasspath(“SomeTextFile.txt”);
c) InputStream in = this.getClass().getResourceAsStream(“SomeTextFile.txt”);
d) InputStream in = this.getClass().getResource(“classpath:/SomeTextFile.txt”);
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Sanfoundry Global Education & Learning Series – Java Programming Language.

To practice all areas of Java language, here is complete set of 1000+ Multiple Choice Questions and Answers.