Merge pull request #65 from DiSousaDev/java_readme

Java readme

Author: jvm-coder

ArrayListString.java

@@ -0,0 +1,59 @@
+import java.util.ArrayList;
+
+public class ArrayListString {
+
+	public static void main(String[] args) {
+
+		// declaring and instantiate a String List
+		ArrayList<String> listaString = new ArrayList<String>();
+
+		// adding info at list
+		listaString.add("Elemento 1");
+		listaString.add("Elemento 2");
+		listaString.add("Elemento 3");
+
+		// show list
+		System.out.println(listaString.get(0));
+		System.out.println(listaString.get(1));
+		System.out.println(listaString.get(2));
+
+		// add an element in specific position
+		listaString.add(1, "Elemento 1.5");
+
+		// show list itens
+		for (String obj : listaString) {
+			System.out.println(obj);
+		}
+
+		// get list size
+		System.out.println("O tamanho da lista é:" + listaString.size());
+
+		// find an list value
+		if (listaString.contains("Elemento 1")) {
+			System.out.println("Elemento encontrado");
+		} else {
+			System.out.println("Elemento não encontrado ");
+		}
+
+		// print index from element
+		int indice = listaString.indexOf("Elemento 1");
+		System.out.println("Indice: " + indice);
+
+		// adding a new element
+		listaString.add("Elemento 4");
+
+		// get list size
+		System.out.println("O tamanho da lista é:" + listaString.size());
+
+		// remove an list element
+		listaString.remove("Elemento 1.5");
+		for (String obj : listaString) {
+			System.out.println(obj);
+		}
+
+		// get list size
+		System.out.println("O tamanho da lista é:" + listaString.size());
+
+	}
+
+}

README.md

@@ -1 +1,18 @@
-# Java_Programs
+#Java_Programs :coffee:
+
+Java is a high-level, class-based, object-oriented programming language that is designed
+to have as few implementation dependencies as possible. It is a general-purpose programming
+language intended to let programmers write once, run anywhere (WORA), meaning that
+compiled Java code can run on all platforms that support Java without the need for recompilation.
+
+Java applications are typically compiled to bytecode that can run on any Java virtual
+machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar
+to C and C++, but has fewer low-level facilities than either of them. The Java runtime provides
+dynamic capabilities (such as reflection and runtime code modification) that are typically not
+available in traditional compiled languages. As of 2019, Java was one of the most popular
+programming languages in use according to GitHub, particularly for client-server web
+applications, with a reported 9 million developers.
+
+Source: https://en.wikipedia.org/wiki/Java_(programming_language)
+
+![Java Logo](https://upload.wikimedia.org/wikipedia/en/3/30/Java_programming_language_logo.svg)