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7 files changed

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7 files changed

+111
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BufferIo.java

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import java.io.BufferedInputStream;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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public class BufferIo {
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public static void main(String[] args) {
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try {
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FileInputStream fis = new FileInputStream("demo.txt");
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BufferedInputStream bis=new BufferedInputStream(fis);
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int i=0;
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while((i=fis.read())!=-1)
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{
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System.out.print((char)i);
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}
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fis.close();
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bis.close();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}

Collection.java

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import java.util.HashMap;
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public class Collection {
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public static void main(String[] args) {
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HashMap<String,Integer> obj=new HashMap<String,Integer>();
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obj.put("saud", 45);
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obj.put("sohail", 745);
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obj.remove("saud");
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obj.clear();
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System.out.println(obj);
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}
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}

CollectionComprato.java

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import java.util.ArrayList;
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import java.util.Collections;
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public class CollectionComprato {
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public static void main(String[] args) {
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ArrayList<Integer> obj=new ArrayList<>();
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obj.add(45);
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obj.add(4);
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obj.add(7);
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obj.add(1);
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System.out.println(obj);
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Collections.sort(obj);
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System.out.println(obj);
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}
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}

ConstructorAccessModifiers.java

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public class ConstructorAccessModifiers {
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ConstructorAccessModifiers() // Default Constructor
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{
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System.out.println("Default Constructor");
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}
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class InnerClass{
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public InnerClass() //public COnstructor
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{
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System.out.println("Public Constructor");
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}
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}
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class PriInnerClass{
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protected PriInnerClass() //Protected
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{
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System.out.println("Protected ");
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}
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}
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}
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ConstructorMainTest.java

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///import ConstructorAccessModifiers.InnerClass;
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//import ConstructorAccessModifiers.PriInnerClass;
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public class ConstructorMainTest {
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public static void main(String[] args) {
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ConstructorAccessModifiers obj=new ConstructorAccessModifiers();
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ConstructorAccessModifiers.InnerClass InObj=obj.new InnerClass();
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ConstructorAccessModifiers .PriInnerClass priObj=obj.new PriInnerClass();
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}
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}

DataHiding.java

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public class DataHiding {
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private int no;

DataTypes.java

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public class DataTypes {
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public static void main(String[] args) {
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boolean flag=true;
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System.out.println("Flag="+flag);
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int data =100;
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System.out.println("Byte Range ="+Byte.MIN_VALUE+"--"+Byte.MAX_VALUE);
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System.out.println("Integer Range="+Integer.MIN_VALUE+"-"+Integer.MAX_VALUE);
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System.out.println("Long Range="+Long.MIN_VALUE+"-"+Long.MAX_VALUE);
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System.out.println("FLoat Range="+Float.MIN_VALUE+"-"+Float.MAX_VALUE);
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}
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}

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