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+/**%0A * Apresentar os conceitos de Classes Wrapper%0A * @author Fabr%C3%ADcio Silva%0A */%0A%0Apublic class ClasseWrapper %7B%0A  public static void main(String%5B%5D args) %7B%0A    Integer idade = new Integer(29);%0A    Double preco = new Double(12.45);%0A%0A    double d = preco.doubleValue();%0A    int i = preco.intValue();%0A    byte b = preco.byteValue();%0A%0A    Boolean casado = new Boolean(%22false%22);%0A%0A    // Convers%C3%A3o est%C3%A1tica%0A    double d1 = Double.parseDouble(%22123.45%22);%0A    int i1 = Integer.parseInt(%22123%22);%0A    float f1 = Float.parseFloat(%223.14F%22);%0A%0A    int i2 = Integer.valueOf(%22101011%22, 2);%0A    System.out.println(i2);%0A  %7D%0A%7D%0A

Add learn Java class ClassWrapper