1. 'Tiger' was the code name for which version of java?

1. 1. 5

   
   
   

   2. 6

   
   
   

   3. 7

   
   
   

   4. 8

   
   
   

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1. View Hint View Answer Discuss in Forum

   'Tiger' was the code name for Java 5.
   

   Version Name	Code Name	Release Date
   JDK 1.0	Oak	January 1996
   JDK 1.1	(none)	February 1997
   J2SE 1.2	Playground	December 1998
   J2SE 1.3	Kestrel	May 2000
   J2SE 1.4	Merlin	February 2002
   J2SE 5.0	Tiger	September 2004
   Java SE 6	Mustang	December 2006
   Java SE 7	Dolphin	July 2011
   Java SE 8		March 2014
   Java SE 9		September, 21st 2017
   Java SE 10		March, 20th 2018

   Correct Option: A

   'Tiger' was the code name for Java 5.
   

   Version Name	Code Name	Release Date
   JDK 1.0	Oak	January 1996
   JDK 1.1	(none)	February 1997
   J2SE 1.2	Playground	December 1998
   J2SE 1.3	Kestrel	May 2000
   J2SE 1.4	Merlin	February 2002
   J2SE 5.0	Tiger	September 2004
   Java SE 6	Mustang	December 2006
   Java SE 7	Dolphin	July 2011
   Java SE 8		March 2014
   Java SE 9		September, 21st 2017
   Java SE 10		March, 20th 2018

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2. What is use of interpreter?

1. 1. They are intermediated between JIT and JVM

   
   
   

   2. It is a synonym for JIT

   
   
   

   3. They convert bytecode to machine language code

   
   
   

   4. They read high level code and execute them

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Interpreters read high level language (interprets it) and execute the program. Interpreters are normally not passing through byte-code and jit compilation.

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3. How can we identify whether a compilation unit is class or interface from a .class file?

1. 1. We cannot differentiate between class and interface

   
   
   

   2. The class or interface name should be postfixed with unit type

   
   
   

   3. Extension of compilation unit

   
   
   

   4. Java source file header

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   The Java source file contains a header that declares the type of class or interface, its visibility with respect to other classes, its name and any superclass it may extend, or interface it implements.

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4. What is the extension of compiled java classes?

1. 1. .txt

   
   
   

   2. .class

   
   
   

   3. .js

   
   
   

   4. .java

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   The compiled java files have .class extension.

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5. What is the extension of java code files?

1. 1. .class

   
   
   

   2. .txt

   
   
   

   3. .js

   
   
   

   4. .java

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   ava files have .java extension.

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