ArrayList<String> languages = new ArrayList<String>();
languages.add("Java");
languages.add("PHP");
languages.add("Python");
System.out.println(languages); //[Java, PHP, Python]
// remove all elements ///
languages.clear();
System.out.println(languages); //[]
// Add elements to empty ArrayList//
languages.add("Java");
System.out.println(languages); //[Java]