g(2));
18// System.out.println(str.substring(1, 3));19 PlayContext text = new PlayContext();
20//上海滩21 System.out.println("上海滩");
22 text.setText("O 2 E 0.5 G 0.5 A 3 E 0.5 G 0.5 D 3 E 0.5 G 0.5 A 0.5 O 3 C 1 O 2 A 0.5 G 1 C 0.5 E 0.5 D 3 ");
23 AbstractExpress expression = null;
24try25 {
26while(text.getText().length() > 0)
27 {
28//这里分解字符串29 String str = text.getText().substring(0, 1);
30switch(str)
31 {
32case "O":
33 expression = new Scale();
34break;
35default:
36 expression = new Note();
37break;
38 }//switch39 expression.interpret(text);
40 }
41 }
42catch (Exception e)
43 {
44 e.printStackTrace();
45 }
46 }
47 }