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+/**%0A * Apresentar os conceitos de Opera%C3%A7%C3%B5es%0A * @author Fabr%C3%ADcio Silva%0A */%0A%0Apublic class Operador %7B%0A  public static void main(String%5B%5D args) %7B%0A    // -2 operador un%C3%A1rio%0A    // 2 + 3 operador bin%C3%A1rio%0A    // true ? %22sim%22 : %22n%C3%A3o%22 operador tern%C3%A1rio%0A%0A    int x = 9 + 4;%0A    System.out.println(x);%0A%0A    String y = %229%22 + %224%22;%0A    System.out.println(y);%0A%0A    double pre = 7 - 4 + 3 * 2;%0A    System.out.println(pre);%0A%0A    double pre2 = (7 - 4 + 3) * 2;%0A    System.out.println(pre2);%0A  %7D%0A%7D%0A

Add learn Java class Operador