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‎OperatorsInJava/.idea/.gitignore

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‎OperatorsInJava/.idea/misc.xml

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‎OperatorsInJava/.idea/modules.xml

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‎OperatorsInJava/OperatorsInJava.iml

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>

‎OperatorsInJava/out/production/OperatorsInJava/AdditionOperator.class

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‎OperatorsInJava/out/production/OperatorsInJava/Arrays.class

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‎OperatorsInJava/out/production/OperatorsInJava/AssignmentOperator.class

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‎OperatorsInJava/out/production/OperatorsInJava/Comment.class

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‎OperatorsInJava/out/production/OperatorsInJava/DivisionOperator.class

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‎OperatorsInJava/out/production/OperatorsInJava/IncrementOperator.class

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‎OperatorsInJava/out/production/OperatorsInJava/Loops.class

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‎OperatorsInJava/out/production/OperatorsInJava/MultiplicatonOperator.class

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‎OperatorsInJava/out/production/OperatorsInJava/ReaderExample.class

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‎OperatorsInJava/out/production/OperatorsInJava/StringExampes.class

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‎OperatorsInJava/out/production/OperatorsInJava/SubtractionOperator.class

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‎OperatorsInJava/src/AdditionOperator.java

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public class AdditionOperator {
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public static void main(String[] args) {
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int a =5 ;
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int b = 7;
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int c = a+b +7+8+9;
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String m ="fouad";
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String s = "fofo";
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System.out.println(c);
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System.out.println(m+" khelifi "+s);
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}
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}

‎OperatorsInJava/src/Arrays.java

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import java.util.Scanner;
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public class Arrays {
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public static void main(String[] args) {
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/* int [] myNumbers = {10,20,30,40,50,60,70};
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myNumbers[2]=150;
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System.out.println(myNumbers.length);
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for (int index = 0 ;index < myNumbers.length;index++){
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System.out.println(myNumbers[index]);
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}*/
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/* for (int el :myNumbers)
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System.out.println(el);*/
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int[] myNumbers = new int[5];
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Scanner reder =new Scanner(System.in);
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for (int index = 0; index < myNumbers.length;index++){
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System.out.println("enter number" + (index+1));
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myNumbers[index]=reder.nextInt();
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}
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for (int index= myNumbers.length -1 ;index >= 0; index-- ){
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System.out.println(myNumbers[index]);
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}
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}
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}

‎OperatorsInJava/src/AssignmentOperator.java

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public class AssignmentOperator {
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public static void main(String[] args) {
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int a;
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String b = "fouad";
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a = 5;
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System.out.println(b);
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a = 7;
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System.out.println(a);
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}
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}

‎OperatorsInJava/src/Comment.java

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import java.util.Scanner;
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public class Comment {
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public static void main(String[] args) {
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//هذا البرنامج يقوم بحساب عامل عدد
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int a = 5;
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int factorial = 1;
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for (int i = 1;i <= a ;i++){
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factorial *= i ;
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}
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System.out.println(factorial);
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Scanner reder = new Scanner(System.in);
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System.out.println("please enter a number");
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int month = reder.nextInt();
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String monthString;
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switch (month) {
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case 1:
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monthString = "January";
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break;
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case 2:
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monthString = "Februry";
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break;
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case 3:
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monthString = "March";
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break;
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case 4:
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monthString = "April";
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break;
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case 5:
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monthString = "May";
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break;
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case 6:
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monthString = "June";
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break;
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case 7:
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monthString = "July";
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break;
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case 8:
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monthString = "August";
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break;
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case 9:
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monthString = "September";
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break;
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case 10:
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monthString = "October";
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break;
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case 11:
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monthString = "November";
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break;
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case 12:
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monthString = "December";
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break;
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default:
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monthString = "Invalid month";
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break;
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}
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System.out.println(monthString);
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}
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}

‎OperatorsInJava/src/DivisionOperator.java

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public class DivisionOperator {
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public static void main(String[] args) {
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int a = 5;
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int b =3;
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// int c = a/b; =1
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float c =(float) a/b;
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//float c = a/b; =1.0
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int s = a%b;
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float v = a/b;
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System.out.println("c: "+c);
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System.out.println("s: "+s);
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System.out.println(v);
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}
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}

‎OperatorsInJava/src/IncrementOperator.java

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public class IncrementOperator {
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public static void main(String[] args) {
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int a = 5 , b =3 ;
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a++;
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b--;
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System.out.println(a);
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System.out.println(b);
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}
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}

‎OperatorsInJava/src/Loops.java

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import java.util.Scanner;
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public class Loops {
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public static void main(String[] args) {
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byte age;
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String name;
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Scanner reader = new Scanner(System.in);
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System.out.println("enter your name");
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name = reader.nextLine();
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// if (age == 0) System.out.println("your age is invalid");
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//if (age == 0){
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//if (age <= 0){
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//if (age < 0){
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//if (age >= 0){
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//if (age > 0){
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do {
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System.out.println("anter your age");
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age = reader.nextByte();
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} while (age <= 0 || age >=120);
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if (age<=0 || name.isEmpty() || age>120){
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if (age <=0 || age>=120){
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System.out.println("your age is invalid");
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}
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if (name.isEmpty()){
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System.out.println("your name is invalid");
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}
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}else {
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System.out.println("hi " + name + " your age is "+ age);
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}
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if (age>=1&&age<=13){
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System.out.println("you are a child");
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}else if (age>=13&&age<=18){
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System.out.println("you are a youg");
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}else if (age>=18){
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System.out.println("you are adult");
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}
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int sum = 0;
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for (int index = 1;index<=age;index++){
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sum = sum + index;
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}
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System.out.println("sum is : " + sum);
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for (int index = 1; index <= age ; index ++) {
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if (index % 2 == 0) {
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int factorial = 1;
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for (int j =1 ; j<= index; j++){
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factorial=factorial*j;
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//factorial*=j;
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}
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System.out.println(index +":"+factorial);
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}
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}
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//if (age != 0){
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// System.out.println("hi " + name + " your age is "+ age);
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//}else {
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// System.out.println("your age is valid");
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// System.out.println("your age is invalid");
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//}
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}
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}

‎OperatorsInJava/src/MultiplicatonOperator.java

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public class MultiplicatonOperator {
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public static void main(String[] args) {
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int a =5 ,b = 3 , c = a*b*2+5;
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System.out.println(c);
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}
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}

‎OperatorsInJava/src/ReaderExample.java

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import java.util.Scanner;
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public class ReaderExample {
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public static void main(String[] args) {
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Scanner reader = new Scanner(System.in);
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System.out.println("enter your name");
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String name = reader.nextLine();
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System.out.println("anter your age");
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byte age = reader.nextByte();
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// if (age == 0) System.out.println("your age is invalid");
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//if (age == 0){
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//if (age <= 0){
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//if (age < 0){
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//if (age >= 0){
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//if (age > 0){
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if (age<=0 || name.isEmpty() || age>120){
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if (age <=0 || age>=120){
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System.out.println("your age is invalid");
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}
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if (name.isEmpty()){
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System.out.println("your name is invalid");
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}
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}else {
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System.out.println("hi " + name + " your age is "+ age);
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}
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if (age>=1&&age<13){
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System.out.println("you are a child");
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}else if (age>=13&&age<18){
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System.out.println("you are a youg");
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}else if (age>=18){
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System.out.println("you are adult");
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}
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//if (age != 0){
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// System.out.println("hi " + name + " your age is "+ age);
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//}else {
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// System.out.println("your age is valid");
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// System.out.println("your age is invalid");
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//}
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}
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}

‎OperatorsInJava/src/StringExampes.java

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public class StringExampes {
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public static void main(String[] args) {
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String welcom = " Welcom to fouad land ";
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System.out.println(welcom.length());
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System.out.println(welcom.charAt(0));
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System.out.println(welcom.indexOf("f"));
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System.out.println(welcom.indexOf("a",14));
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System.out.println(welcom.lastIndexOf("to"));
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String SubText = welcom.substring(10);
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System.out.println(SubText);
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System.out.println(welcom.substring(10));
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System.out.println(welcom.substring(10,15));
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System.out.println(welcom.replace("a","X"));
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System.out.println(welcom.replaceFirst("a","X"));
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System.out.println(welcom.toUpperCase());
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System.out.println(welcom.toLowerCase());
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// welcom = welcom.toUpperCase();
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//System.out.println(welcom);
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System.out.println(welcom.trim());
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System.out.println(welcom.contains("fouad"));
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System.out.println(welcom.startsWith(" "));
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System.out.println(welcom.endsWith(" "));
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}
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}

‎OperatorsInJava/src/SubtractionOperator.java

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public class SubtractionOperator {
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public static void main(String[] args) {
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int a = -5 ;
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int b = -3 ;
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int c = b-a;
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c = -c;
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System.out.println(c);
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}
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}

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