Update java-multiple-choice-questions-answers.md

Author: learning-zone

java-multiple-choice-questions-answers.md

@@ -179,6 +179,10 @@ Exception in thread "main" java.lang.Error: Unresolved compilation problem:
 
 	at Test.main(Test.java:12)
 ```
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 #### Q. What is the output of following program?
 ```java
 public class Test 
@@ -235,6 +239,10 @@ D. The code does not compile
 ```
 **Explanation**: The local variable chair may not have been initialized
 
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 #### Q. Which is correct about an instance variable of type String?
 A. It defaults to an empty string.  
 B. It defaults to null.