Answer / mvteja

Hashtable does not contain null value. if v try to store
null value, v will get the following error.




F:\Test>javac -d . Test.java

F:\Test>java a.b.c.Test
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.put(Unknown Source)
at a.b.c.Test.<init>(Test.java:18)
at a.b.c.Test.main(Test.java:27)

F:\Test>

Answer / karthik

Normally hastable doen't allow null value, it will through
run time exception like NullPointerException

whats is mean by filter?

1 Answers   SolutionNET,

---

How JNDI is used in JMS ?

1 Answers  

---

hi, All are saying that now software field position is not good and in 5-10yrs total software field ll be saturated . is it true? i am unable decide ii continue in this field or not please tell me?

19 Answers  

---

What exceptions are thrown by RMI?

1 Answers  

---

what is Static binding?

2 Answers   Wipro,

---

can we write implementation for a method with in another method?

3 Answers   Cap Gemini,

---

What is private static final long serialVersionUID = 1L;

3 Answers   Google,

---

What is the difference between session and entity beans?

0 Answers  

---

What is runnable?

2 Answers  

---

What is permgen or permanent generation?

0 Answers  

---

What are the various thread priorities?

1 Answers  

---

For which statements does it make sense to use a label?

0 Answers  

---