Sentence Reverse

import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Stack;
import java.util.regex.Matcher;
import java.lang.CharSequence;
import java.lang.StringBuffer;
public class Reverse {
public static void main(String[] args) {
String str = "Vijay is at Office";
ArrayList ab = new ArrayList();
char str1[] = str.toCharArray();
Stack se = new Stack();
for(int i=0;i if(str1[i]!=' '){
ab.add(String.valueOf(str1[i]));
System.out.println(ab);
}else{
String strr =null;
int a =0;
for(String gh:ab){
if(a==0){
strr =gh;
a=1;
}
else{
strr = strr+gh;
}

}
se.push(strr);
ab.clear();
}
if(i==str1.length-1){
String ghkk = null;
int j=0;
for(String gh1:ab){
if(j==0){
ghkk =gh1;
j=1;
}
else{
ghkk = ghkk+gh1;
}

}
se.push(ghkk);
ab.clear();
}
}
System.out.println(se.size());
for(int i=0;i System.out.print(se.pop()+ " ");
}


}
}

/* for(int i=0;i if(str1[i]!=' '){
result[j] = str1[i];
}
else{
String kl = null;
for(int k=0;k if(k==0){
kl=String.valueOf(result[k]);
}
else{
kl = kl +String.valueOf(result[k]);
}
}
System.out.println("KL"+kl);
s.push(String.valueOf(kl));
}
}
for(int i=0;i if(i==s.size()-1){
System.out.print(s.pop());
}else{
System.out.print(s.pop()+" ");
}
}
}*/

String

Pattern patt = Pattern.compile("^'(.*)'$"); // could be stored in a static final field.
Matcher matcher = patt.matcher(theString);
boolean matches = matcher.matches();
updateString = matcher.group(1);

updateString = theString.substring(1, theString.length() - 1);

Java Performance Testing

http://www.artima.com/weblogs/viewpost.jsp?thread=122295

Checked Exceptions

http://cafe.elharo.com/java/voting-for-checked-exceptions/

Weak references

http://www.ibm.com/developerworks/java/library/j-jtp11225/

Thread Safety-Spring

http://www.javalobby.org/articles/thread-safe/index.jsp

Java Interview questions

Java Interview Questions
--------------------------
1)Linked List vs Array List

2)Weak reference vs Strong Reference

3)Sort objects by Date

Ans:http://download.oracle.com/javase/tutorial/collections/interfaces/order.html
Ans:http://codingforums.com/showthread.php?t=43014

4)Abstract class vs Interface

5)Thread.join()

6)Ways to stop a Thread

7)Deadlocks

8)Avoid Deadlocks


Spring
--------

1)Different types of injection

2)Bean Context vs Application context

3)Why Spring

4)Spring with Hibernate with Struts







SQL
----
1)Delete vs Truncate
2)SQL Views
3)

Spring Dependency Injection

Spring Dependency Injection
http://www.vogella.de/articles/SpringDependencyInjection/article.html

Cloning

http://www.javabeat.net/tips/34-using-the-prototype-pattern-to-clone-objects.html

hashmap

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package corejava;

import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.TreeSet;
import java.lang.Thread;


/**
*
* @author VijaykumarRamalingam
*/
public class hasmap {
public static void main(String args[])
{
//Hashmap vs Hashtable
//Synschrnized
//null key and null values

HashMap s=new HashMap();
s.put("1","b");
s.put(null, "5");
TreeSet sd=(TreeSet)s.keySet();
Iterator i= sd.iterator();
System.out.print(s.get(null));
Hashtable s3=new Hashtable();
s3.put(1,"b");
s3.put(1, null);
System.out.print(s3.get(1));





}

}

reverse

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package corejava;
public class Main {
public static void main(String[] args) {
int a[]=new int[3];
a[0]=1;
a[1]=2;
a[2]=3;
int j=a.length-1;
for(;j>-1;j--)
{
System.out.println("j"+a[j]);
}
}
}

UBS Interview Questions

1)oops concepts
2)Race condition
3)Deadlock'
4)critical section
5)String
6)Java access specifiers
7)final methods in object class
8)exception hierarchy
9)unchecked exception examples
10)program IO exception
11)f00()-overrriding
12)Collection interface implementation
13)methods of collection classes

Spring/Hibernate interview questions

http://www.mydeveloperconnection.com/html/spring-hibernate-QnA.htm

Hashed Collections

http://www.developer.com/java/other/article.php/10936_3799136_3/Java-Hashed-Collections.htm

Inner classes

http://www.developer.com/java/other/article.php/859381/SJCP-Exam-Preparation-Top-level-and-Inner-Classes.htm

http://www.developer.com/java/ent/article.php/899361/Some-Insight-Into-Inner-Classes-in-Java-Part-1.htm

Transaction Isolation Levels

http://docstore.mik.ua/orelly/java-ent/ebeans/ch08_03.htm

rap eCLIPSE

http://74.125.113.132/search?q=cache:svDuZQuz0lkJ:lomboz.ow2.org/eclipsist/2007/presentations/Jochen_Krause_Eclipse_RAP.pdf+eclipse+RAP]&cd=95&hl=en&ct=clnk&gl=us&client=firefox-a

http://java.sun.com/products/jfc/tsc/articles/architecture/

Java Applet Tutorials

http://java.sun.com/docs/books/tutorial/uiswing/components/table.html

Pass by value

/* * To change this template, choose Tools Templates * and open the template in the editor. */
/** * * @author vramali1 */public class NewClass { private int i=0; private int j=0; public void bn(NewClass g) { System.out.println(g.i); System.out.println(g.j); g.i=45; g.j=56;
} public static void main(String args[]) { NewClass n=new NewClass(); n.i=1; n.bn(n); System.out.println(n.i); System.out.println(n.j); }}