Answer / lal ajith kumara

Since java.Util.Set is not allowing duplicates u can use it

String[] letters = {"a", "b", "b", "c" ,"a", "d","a"};
Set duplicateTester = new HashSet<String>();
for(int i = 0; i<letters.length;i++){
if(true == duplicateTester.add(letters[i])){
System.out.println("true>>"+letters[i]);

}else{
System.out.println("false>>"+letters[i]);
}

}

Answer / pratiksha

import java.util.*;
class alpha
{
String let;
public alpha(String l)
{
this.let=l;
}
}

public class Duplicateletters
{
public static void main(String []args)
{
int i=0;
String[] letters = {"a", "b", "b", "c" ,"a", "d","a"};
ArrayList<alpha> a = new ArrayList<alpha>();
for(i=0;i<letters.length;i++)
{
a.add(new alpha(letters[i]));
}
String let1=null;
Iterator<alpha> i1 = a.iterator();
while(i1.hasNext())
{
alpha a1 = i1.next();
let1=a1.let;
}
int j=0;
Iterator<alpha> i2 = a.iterator();
while(i2.hasNext())
{

alpha a2 = i2.next();
if(let1==a2.let)
{
j=j+1;
}
}
System.out.println(j);

}
}

how can i use a nonsynchronized hashtable?

0 Answers   CoreObjects,

---

public class Garbage { int a=0; public void add() { int c=10+20; System.out.println(c); System.out.println(a); } public static void main(String args[]) { Garbage obj=new Garbage(); System.gc(); System.out.println("Garbage Collected"); obj.add(); } } Above is a code in java used for garbage collection. object obj has been created for the class Garbage and system.gc method is called. Then using that object add method is called.System.gc method if called the obj should be garbage collected?

6 Answers  

---

why Java does not support multiple inheritances?

0 Answers   Aspire,

---

How multipleInheritance is possible in java?

18 Answers   Satyam,

---

How can we make copy of a java object?

0 Answers  

---

Can array grow dynamically in java?

0 Answers  

---

What is the largest long allowed by java?

0 Answers  

---

Explain an algorithm to find depth of a binary tree.

0 Answers   Akamai Technologies,

---

What is difference between path and classpath?

0 Answers  

---

What is an i/o filter?

5 Answers  

---

A abstract class extending an abstract class.Super class has both abstract and non-abstract methods.How can we implement abstract and non-abstract mehtods? Explain with snippet

3 Answers  

---

What is the difference between parameters and arguments ?

2 Answers  

---