История страницы

String description = "The class String includes methods for examining\n" +
        " * individual characters of the sequence, for comparing strings, for\n" +
        " * searching strings, for extracting substrings, and for creating a\n" +
        " * copy of a string with all characters translated to uppercase or to\n" +
        " * lowercase";

System.out.println("Length: "+description.length()+", is empty: "+description.isEmpty());

String[] words = description.split(" ");
for(String word : words) {
    System.out.println(word);
}

String shortDescription =  description.substring(10);
System.out.println(shortDescription);
shortDescription =  description.substring(description.indexOf("String"));
System.out.println(shortDescription);

String usdNumber = "$101.78";
System.out.println(usdNumber.matches("\\$\\d*\\.\\d*"));

String stringWithPrice = "Cost is 101.56 USD in Target";
System.out.println(stringWithPrice.replaceAll("(\\d*\\.\\d*)( USD)", "\\$$1"));

String[] numbers = new String[] {"one", "two", "three"};
System.out.println(String.join(",", numbers));