黑盒测试的等价类划分法软件测试（2）

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.AnchorPane;
import javafx.scene.text.Text;
import javafx.stage.Stage;


public class testing extends Application {

    public static void main(String[ ] args) {
        testing.launch( args );
    }
    public void start( Stage primaryStage ) {
        primaryStage.setTitle( "input testing" );
        AnchorPane root = new AnchorPane();
        
        Text text = new Text("请输入用户名");
        final Text textans1 = new Text("");
        final Text textans2 = new Text("");
        final Text textans3 = new Text("");
        
        final TextField intext1 = new TextField("");
        intext1.setMaxSize(140, 20);    
        AnchorPane.setTopAnchor(text, 80.0);
        AnchorPane.setLeftAnchor(text, 110.0);       
        
        AnchorPane.setTopAnchor(textans1, 240.0);
        AnchorPane.setLeftAnchor(textans1, 70.0);
        AnchorPane.setTopAnchor(textans2, 260.0);
        AnchorPane.setLeftAnchor(textans2, 70.0);  
        AnchorPane.setTopAnchor(textans3, 280.0);
        AnchorPane.setLeftAnchor(textans3, 70.0);  
        
        AnchorPane.setTopAnchor(intext1, 100.0);
        AnchorPane.setLeftAnchor(intext1, 70.0);        
        
        final TextField intext2 = new TextField("");
        final TextField intext3 = new TextField("");
        intext2.setMaxSize(140, 20); 
        intext3.setMaxSize(140, 20); 
        AnchorPane.setTopAnchor(intext2, 140.0);
        AnchorPane.setLeftAnchor(intext2, 70.0); 
        AnchorPane.setTopAnchor(intext3, 180.0);
        AnchorPane.setLeftAnchor(intext3, 70.0); 
        
        root.getChildren().addAll(text,intext1,intext2,intext3);  
        root.getChildren().addAll(textans1,textans2,textans3);
        
        Button btn = new Button("提交");        
        root.getChildren().addAll(btn);
        AnchorPane.setTopAnchor(btn, 210.0);
        AnchorPane.setLeftAnchor(btn, 120.0);
       
        btn.setOnAction(new EventHandler<ActionEvent>() {
            public void handle(ActionEvent arg0) {
                textans1.setText("");
                textans2.setText("");
                textans3.setText("");             
                if(check(intext1.getText().toString()) != "输入正确") 
                    textans1.setText("一号未通过："+check(intext1.getText().toString()));
                if(check(intext2.getText().toString()) != "输入正确") 
                    textans2.setText("二号未通过："+check(intext2.getText().toString()));
                if(check(intext3.getText().toString()) != "输入正确") 
                    textans3.setText("三号未通过："+check(intext3.getText().toString()));
                if(check(intext1.getText().toString())== "输入正确" && 
                   check(intext2.getText().toString())== "输入正确"&&
                   check(intext3.getText().toString())== "输入正确")
                {
                    textans1.setText("通过");
                    textans2.setText("");
                    textans3.setText("");
                }
            }
        });
      
        primaryStage.setScene(new Scene(root,300,300));
        primaryStage.show( );
        }
        public String check(String str){
            char array[] = new char[str.length()];
            array = str.toCharArray();
            if (str.length() < 1)
                return "输入不能为空";          
            if (str.length() > 6)
                return "输入超出长度限制,请修改"; 
            if (str.length() != 0){
                for (int i = 0; i < str.length(); i++){
                    if(!((array[i]>=‘a‘ && array[i]<=‘z‘)||(array[i]>=‘A‘ && array[i]<=‘Z‘)||(array[i]>=‘0‘ && array[i]<=‘9‘)))
                       return "含有非法字符，请修改";
                }
            }
            return "输入正确";
      }
 
}