import java.util.ArrayList;
import java.util.HashSet;
public class MainClass
{
public static void main(String[] args)
{
//Constructing An ArrayList
ArrayList<String> listWithDuplicateElements = new ArrayList<String>();
listWithDuplicateElements.add("JAVA");
listWithDuplicateElements.add("J2EE");
listWithDuplicateElements.add("JSP");
listWithDuplicateElements.add("SERVLETS");
listWithDuplicateElements.add("JAVA");
listWithDuplicateElements.add("STRUTS");
listWithDuplicateElements.add("JSP");
//Printing listWithDuplicateElements
System.out.print("ArrayList With Duplicate Elements :");
System.out.println(listWithDuplicateElements);
//Constructing HashSet using listWithDuplicateElements
HashSet<String> set = new HashSet<String>(listWithDuplicateElements);
//Constructing listWithoutDuplicateElements using set
ArrayList<String> listWithoutDuplicateElements = new ArrayList<String>(set);
//Printing listWithoutDuplicateElements
System.out.print("ArrayList After Removing Duplicate Elements :");
System.out.println(listWithoutDuplicateElements);
}
}
ArrayList With Duplicate Elements :[JAVA, J2EE, JSP, SERVLETS, JAVA, STRUTS, JSP] ArrayList After Removing Duplicate Elements :[JAVA, SERVLETS, JSP, J2EE, STRUTS]
import java.util.ArrayList;
import java.util.LinkedHashSet;
public class MainClass
{
public static void main(String[] args)
{
//Constructing An ArrayList
ArrayList<String> listWithDuplicateElements = new ArrayList<String>();
listWithDuplicateElements.add("JAVA");
listWithDuplicateElements.add("J2EE");
listWithDuplicateElements.add("JSP");
listWithDuplicateElements.add("SERVLETS");
listWithDuplicateElements.add("JAVA");
listWithDuplicateElements.add("STRUTS");
listWithDuplicateElements.add("JSP");
//Printing listWithDuplicateElements
System.out.print("ArrayList With Duplicate Elements :");
System.out.println(listWithDuplicateElements);
//Constructing LinkedHashSet using listWithDuplicateElements
LinkedHashSet<String> set = new LinkedHashSet<String>(listWithDuplicateElements);
//Constructing listWithoutDuplicateElements using set
ArrayList<String> listWithoutDuplicateElements = new ArrayList<String>(set);
//Printing listWithoutDuplicateElements
System.out.print("ArrayList After Removing Duplicate Elements :");
System.out.println(listWithoutDuplicateElements);
}
}
ArrayList With Duplicate Elements :[JAVA, J2EE, JSP, SERVLETS, JAVA, STRUTS, JSP] ArrayList After Removing Duplicate Elements :[JAVA, J2EE, JSP, SERVLETS, STRUTS]
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