Program 1 package dataflair; import java.util.*; public class TestMain1 { public static void main(String[] args) { ArrayList<String>mylist=new ArrayList<String>(5); mylist.add("A"); mylist.add("B"); mylist.add("C"); mylist.add("D"); mylist.add("E"); mylist.add("F"); mylist.add("G"); mylist.add("H"); Scanner scan=new Scanner(System.in); String temp; System.out.println("Enter A String... The post Java Program on Collection Array List Part – 2 appeared first on DataFlair ..read more

Program 1 package dataflair; import java.io.Serializable; public class Employee implements Serializable { private int eid; private String ename; private int esalary; transient private int mobile; public Employee(int eid, String ename, int esalary, int mobile)... The post Java Program on Transient in Serialization appeared first on DataFlair ..read more

Program 1 package dataflair; import java.io.*; public class TestWriter { public static void main(String args[])throws IOException { File F=new File("c://dataflairfile/student.txt"); FileWriter fw=null; try { fw=new FileWriter(F,true); char ch='D'; fw.flush(); fw.write(ch); System.out.println("File created......"); } finally... The post Java Program on File Handling using Character Stream appeared first on DataFlair ..read more

Program 1 package dataflair; import java.io.*; public class TestRead1 { public static void main(String[] args) throws IOException { File F=new File("d://dataflair/student.txt"); char ch; int n; if(F.isFile()) { FileInputStream fis=null; try { fis=new FileInputStream(F); while((n=fis.read())!=-1)... The post Java Program on How to Read Data from File appeared first on DataFlair ..read more

Program 1 package dataflair; import java.util.*; public class TestCursor1 { public static void main(String[] args) { Vector V=new Vector(); V.add("Dataflair"); V.add(123); V.add(45.66); V.add(true); V.add("Dataflair"); V.add(123); V.add(45.66); V.add(true); V.add("Dataflair123"); V.add(678); V.add(45.88); V.add(false); Enumeration e=V.elements(); while(e.hasMoreElements())... The post Java Program on Cursor in Collection appeared first on DataFlair ..read more

Program 1 package dataflair; import java.util.*; public class TestMap1 { public static void main(String[] args) { Map<Integer,String> M=new HashMap<Integer,String>(); System.out.println(M.size()); M.put(1, "Limca"); M.put(3, "Water"); M.put(5, "Frooti"); M.put(2, "Limca"); M.put(7, "Frooti"); M.put(4, "Limca"); M.put(6, "Water... The post Java Program on Map Interface Methods appeared first on DataFlair ..read more

Program 1 package dataflair; import java.io.*; public class TestWrite1 { public static void main(String[] args) throws IOException { FileOutputStream fos=null; byte b[]; try { File F=new File("d://filedata"); F.mkdir(); fos=new FileOutputStream("d://filedata/student.txt"); char ch; String S="Data... The post Java Program on How to Write Data in File appeared first on DataFlair ..read more

Program 1 package dataflair; import java.util.*; public class TestTree { public static void main(String[] args) { ArrayList<Integer>A=new ArrayList<Integer>(); A.add(5); A.add(2); A.add(6); A.add(2); A.add(4); A.add(1); A.add(10); A.add(8); A.add(9); A.add(7); // System.out.println("ArrayList: "+A); TreeSet<Integer>T1=new TreeSet<Integer>(A); System.out.println("TreeSet... The post Java Program on Tree Set in Collection appeared first on DataFlair ..read more

Program 1 package dataflair; import java.io.Serializable; public class Student implements Serializable { int rno; String name; int age; public Student(int rno, String name, int age) { this.rno = rno; this.name = name; this.age =... The post Java Program on Serialization appeared first on DataFlair ..read more

Program 1 package dataflair; class MyGen<T extends Number> { T ar[]; MyGen(T ar[]) { this.ar=ar; } void sumofElements() { double s=0.0; for(int i=0;i<ar.length;i++) { s=s+ar[i].doubleValue(); } System.out.println("Sum of elements is: "+s); } } public... The post Java Program on Generic Methods appeared first on DataFlair ..read more