6. Which of the below is invalid identifier with main method?

1. 1. private

   
   
   

   2. final

   
   
   

   3. static

   
   
   

   4. public

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   main method cannot be private as it is invoked by external method. Other identifier are valid with main method.

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7. Which statement is true about java?

1. 1. Platform dependent programming language

   
   
   

   2. Code dependent programming language

   
   
   

   3. Sequence dependent programming language

   
   
   

   4. Platform independent programming language

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Java is called ‘Platform Independent Language’ as it primarily works on the principle of ‘compile once, run everywhere’.

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8. Which component is responsible to optimize bytecode to machine code?

1. 1. JRE

   
   
   

   2. JDK

   
   
   

   3. JVM

   
   
   

   4. JIT

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   JIT optimizes bytecode to machine specific language code by compiling similar bytecodes at same time.This reduces overall time taken for compilation of bytecode to machine specific language.

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9. Which component is responsible to run java program?

1. 1. JIT

   
   
   

   2. JRE

   
   
   

   3. JDK

   
   
   

   4. JVM

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   JRE is the implementation of JVM, it provides platform to execute java programs.

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10. Which component is responsible for converting bytecode into machine specific code?

1. 1. JDK

   
   
   

   2. JIT

   
   
   

   3. JRE

   
   
   

   4. JVM

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   JVM is responsible to converting bytecode to the machine specific code. JVM is also platform dependent and provides core java functions like garbage collection,memory management, security etc.

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