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oefremidisoefremidis
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Java Basic - SQL Session
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2 files changed

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-27
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2 files changed

+177
-27
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Diff for: ‎java-path-core-basic/pom.xml

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@@ -18,4 +18,16 @@
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<name>[${project.artifactId}]</name>
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<description>Java Learning @ Development Path, Core module, Basic Java demonstration</description>
2020

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<dependencies>
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<!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>1.4.200</version>
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</dependency>
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</dependencies>
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</project>

Diff for: ‎java-path-core-basic/src/main/java/gr/codelearn/core/showcase/basic/BasicJavaExamples.java

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@@ -1,34 +1,172 @@
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package gr.codelearn.core.showcase.basic;
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import javax.swing.plaf.basic.BasicInternalFrameTitlePane;
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import java.util.Scanner;
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public class BasicJavaExamples {
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public static void main(String[] args) {
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boolean myVariable = true;
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int myInteger = 0;
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float myFloat = 3.14f;
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var myVar = "hello";
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// myVar = 10;
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System.out.println("Boolean variable: " + myVariable + " integerVariable: " + myInteger);
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System.out.println("Hello " + 1 + 2);
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System.out.println(1 + 2 + " Hello");
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int aVariableInteger = 10;
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aVariableInteger = aVariableInteger + 2;
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aVariableInteger -= 2;
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aVariableInteger++;
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++aVariableInteger;
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int a = 10;
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int b = 20;
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// int c = ++a+b++;
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/*System.out.println(c);
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System.out.println(c++);
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System.out.println(++c);*/
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System.out.println(a * b);
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System.out.println(b / a);
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System.out.println(b % a);
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// final int MAX_NUMBER_OF_ARG = 8;
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// boolean myVariable = true;
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// int myInteger = 0;
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// float myFloat = 3.14f;
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// long l = 3l;
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//
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// var myVar = "hello";
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// // myVar = 10;
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//
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// System.out.println("Boolean variable: " + myVariable + " integerVariable: " + myInteger);
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//
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// System.out.println("Hello " + 1 + 2);
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// System.out.println(1 + 2 + " Hello");
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//
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// int aVariableInteger = 10;
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// aVariableInteger = aVariableInteger + 2;
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// aVariableInteger -= 2;
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// aVariableInteger++;
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// ++aVariableInteger;
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//
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// int a = 10;
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// int b = 20;
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// b = a++; // b = a; a = a + 1
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// b = ++a; // a = a + 1; b = a;
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//// int c = ++a+b++;
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// /*System.out.println(c);
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// System.out.println(c++);
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// System.out.println(++c);*/
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// System.out.println(a * b);
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// System.out.println(b / a);
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// System.out.println(b % a);
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// int a = 5;
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// int b = 2;
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//
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// System.out.println(5.0/2);
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// System.out.println( (double)a / b );
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// System.out.println(a % b);
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// System.out.println(b % a);
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// System.out.println( 60 % 60);
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// >= <= > < == != // Relational
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// System.out.println(5 < 3);
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//
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// // && || ! // logical
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// int a = 5;
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// int b = 2;
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// System.out.println( (a < b && b > 0) );
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// & | ! >> <<
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// int bits = 5;
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// System.out.println(bits << 2);
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// System.out.println(bits >> 2);
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// int a = 5;
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// int b = 22;
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// // System.out.println( (a < b && b > 0) );
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//
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//// if (a > b){
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//// System.out.println(a);
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//// }
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//
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// if (a > b){
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// System.out.println(a);
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// } else {
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// System.out.println(b);
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// }
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//
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// // condition ? code for true : false;
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// System.out.println( a > b ? a : b );
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//
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//
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// if (a > b){
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// System.out.println(a);
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// } else if (a < b){
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// System.out.println(b);
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// } else {
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// System.out.println("=");
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// }
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// int a = 5;
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// int b = 0;
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// if (a < b && ++b > 0){
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// System.out.println(a);
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// } else {
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// System.out.println(b);
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// }
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// int a = 5;
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// switch (a){
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// case 3:
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// System.out.println("3"); break;
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// case 5:
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// System.out.println("5"); break;
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// case 7:
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// System.out.println("7"); break;
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// default:
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// System.out.println("Error...");
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// }
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// String month = "Jan";
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// switch (month){
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// case "Jan":
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// case "Mar":
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// case"May": System.out.println(31); break;
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// case "Apr":
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// case "Jun":
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// case"Aug": System.out.println(30); break;
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// default:
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// System.out.println(27);
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//
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// }
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// int i = 6;
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// while (i < 5){
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// System.out.println(i);
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// i++;
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// }
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//
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// for(int j = 0; j < 5; j++){
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// System.out.println(j);
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// }
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//
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// int k=6;
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// do {
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// System.out.println(k);
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// k++;
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// } while(k < 5);
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// Scanner in = new Scanner(System.in);
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// int number;
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// do {
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// System.out.print("Enter a number: ");
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// number = in.nextInt();
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// } while(number <= 0);
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//
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// int t = 0;
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// while(t < 400){
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// int l = 9;
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// //....
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// t++;
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// }
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int res = sum(2,5);
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int res1 = sum(2,5) + 45 + sum(4,4);
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System.out.println(res);
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System.out.println(res1);
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System.out.println(sum(7,3));
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doSomething();
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}
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public static int sum(int num1, int num2){
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// int res = num1 + num2;
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// return res;
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return num1 + num2;
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}
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public static void doSomething(){
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System.out.println("Hello");
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}
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}

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