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Questions and Exercises: Getting Started

Questions

1. When you compile a program written in the Java programming language, the compiler converts the human-readable source file into platform-independent code that a Java Virtual Machine can understand. What is this platform-independent code called?
2. Which of the following is not a valid comment:
a. /** comment */
b. /* comment */
c. /* comment
d. // comment

3. What's the first thing you should check if you see the following error at runtime:
Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldApp.java.

4. What is the correct signature of the main method?
5. When declaring the main method, which modifier must come first, public or static?
6. What parameters does the main method define?

Exercises

1. Change the HelloWorldApp.java program so that it displays Hola Mundo! instead of Hello World!.
2. You can find a slightly modified version of HelloWorldApp here: HelloWorldApp2.java
The program has an error. Fix the error so that the program successfully compiles and runs. What was the error?

Check your answers.

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Alden Hosting offers private JVM (Java Virtual Machine), Java Server Pages (JSP), Servlets, and Servlets Manager with our Web Hosting Plans WEB 4 PLAN and WEB 5 PLAN , WEB 6 PLAN .

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server

Questions

Exercises

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server


	Alden Hosting provides professional, efficient, and reliable business-class Web hosting services to small- and medium-sized businesses.

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER, Private JVM (Java Virtual Machine), Private Tomcat Server

Questions

Exercises

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER, Private JVM (Java Virtual Machine), Private Tomcat Server

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server

JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server