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update - static, looping concepts and conditional statements
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‎JavaBasicPrograms/src/main/java/learnConditionalStatemt/DrinkTypes.java‎

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package learnConditionalStatemt;
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public class DrinkTypes {
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String myDrink = "Milk";
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public void favDrink() {
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if (myDrink.equals("Coffee")) {
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System.out.println("Coffee is my drink");
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}
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else if (myDrink.equals("Boost")) {
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System.out.println("Boost is my drink");
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}
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else if (myDrink.equals("Milk")) {
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System.out.println("Milk is my drink");
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}
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else {
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System.out.println("Tea is my Drink");
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}
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}
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public static void main(String[] args) {
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DrinkTypes drink = new DrinkTypes();
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drink.favDrink();
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}
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}

‎JavaBasicPrograms/src/main/java/learnConditionalStatemt/IfElseConditionChk.java‎

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package learnConditionalStatemt;
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public class IfElseConditionChk {
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boolean emptyCup; // default value of boolean data type is 'false'
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public static void main(String[] args) {
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IfElseConditionChk cup = new IfElseConditionChk();
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if(cup.emptyCup == false) { // the value of '(cup.emptyCup)' is taken as true by default if we leave it as free/blank
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System.out.println("The cup is NOT Empty");
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}
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else {
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System.out.println("The cup is Empty");
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}
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}
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}
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‎JavaBasicPrograms/src/main/java/learnConditionalStatemt/SwitchCaseExample.java‎

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package learnConditionalStatemt;
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public class SwitchCaseExample {
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String myHero = "Bat Man";
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public void checkmyHero() {
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switch (myHero) {
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case "Iron Man":
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System.out.println("My hero is Iron Man");
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break; // If we dont give break; command, all other following cases will also get executed without checking the conditions
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case "Super Man":
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System.out.println("My hero is Super Man");
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break;
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case "Junk Man":
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System.out.println("My hero is Junk Man");
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break;
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default:
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System.out.println("My hero is Bat Man");
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}
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}
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public static void main(String[] args) {
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SwitchCaseExample hero = new SwitchCaseExample();
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hero.checkmyHero();
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}
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}

‎JavaBasicPrograms/src/main/java/learnConstructors/NoArgumentConstructor.java‎

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public class NoArgumentConstructor {
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int empID;
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String empName;
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String empPlace;
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static String empName;
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// No argument or non-parametrized constructor example:
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NoArgumentConstructor() { //No argument is passed to this constructor
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empID = 1234;
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empName = "Ajith";
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System.out.println("No argument object is created: " +empID);
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System.out.println("No argument object is created: " +empPlace);
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}
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public static void main(String[] args) {
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NoArgumentConstructor emp = new NoArgumentConstructor();
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System.out.println("No argument object is created: " +empName); // can use the variable in main() method if it is static
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}
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}

‎JavaBasicPrograms/src/main/java/learnLoopingConcepts/ForLoopExample.java‎

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package learnLoopingConcepts;
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public class ForLoopExample {
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public static void main(String[] args) {
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// Example for For loop
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for(int times=0; times<= 25; times++) {
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System.out.println("My Name is Ajith");
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}
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// Example for While loop
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int i = 1;
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while (i<=25) {
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System.out.println("Counting add by 1 is: " +i);
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i++;
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}
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// Example for do - While loop
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int count = 0;
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do {
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System.out.println("Verify and increase value by 1: " +count);
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count++;
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}
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while(count <=25);
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}
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}

‎JavaBasicPrograms/src/main/java/staticMethodTypes/LearnStaticBlock.java‎

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package staticMethodTypes;
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public class LearnStaticBlock {
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static {
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System.out.println("static block num 1"); // All the static blocks will execute first before main() method
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}
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static {
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System.out.println("static block # 2");
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}
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static {
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System.out.println("static block # 3");
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}
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public static void main(String[] args) {
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System.out.println("main static method"); // main method will execute after all static methods
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}
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}

‎JavaBasicPrograms/src/main/java/staticMethodTypes/LearnStaticMethodExample.java‎

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package staticMethodTypes;
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public class LearnStaticMethodExample {
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public static void staticMethod() {
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// nonStatic(); // cannot call non-static methods to any other methods to execute it except main() method by creating/using object
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System.out.println("It is Static Method");
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}
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public void nonStatic() {
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staticMethod(); // can call a static method to any static or non-static methods simply without creating object
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System.out.println("It is non-static method");
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}
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public static void main(String[] args) {
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staticMethod(); //no need (not necessary) to create object for static methods
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LearnStaticMethodExample stac = new LearnStaticMethodExample();
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stac.nonStatic(); // need object to call non-static method(s)
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System.out.println("main method");
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}
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}

‎JavaBasicPrograms/src/main/java/staticMethodTypes/LearnStaticVariable.java‎

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package staticMethodTypes;
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public class LearnStaticVariable {
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static int rows=50; // static variable name displays in italic font style
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static String name = "Name";
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int columns = 10;
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String table = "Table";
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public static void main(String[] args) {
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rows=75;
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// columns=20; // cannot call the non-static variable without object
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LearnStaticVariable object1 = new LearnStaticVariable();
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object1.rows=100;
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object1.columns=25;
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object1.table="Table1";
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object1.name="Name1";
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LearnStaticVariable object2 = new LearnStaticVariable();
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object2.rows=300;
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object2.columns = 50;
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object2.name="Name2";
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object2.table="Table2";
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System.out.println("object1 rows:"+ object1.rows); //static variable is overridden by the final value and stored
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System.out.println("object1 columns:"+ object1.columns); // displays with normal given value
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System.out.println("object1 table:"+ object1.table);
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System.out.println("object1 name:"+ object1.name); // static variable overridden and displays final value in o/p
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System.out.println("object2 rows value is: "+object2.rows);
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System.out.println("object2 column value is: " +object2.columns);
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System.out.println("object2 name is: "+object2.name);
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System.out.println("object2 Table name is: "+object2.table);
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}
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}

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