Question

我有一个实现ActionListener的类SaveFile。其中的方法采用字符串参数compleName。如何在该类的actionPerformed方法中使completeName可访问。

由于

 class SaveFile implements ActionListener {
        public void uploadToDatabase(String completeName){

        }

        public void actionPerformed(ActionEvent e) {    
            // I want to access completeName here
        }
   }
}

Answer 1

只需将其用作课堂内的变量

class SaveFile implements ActionListener {
        private string completeName;

        public void uploadToDatabase(String compName){
             //code...
             this.completeName = compName;
        }

        public void actionPerformed(ActionEvent e) {    
            System.out.println(completeName);
        }
   }
}

Answer 2

只需确保将completeName存储为实例变量。

class SaveFile implements ActionListener {
        private String completeName;

        public void uploadToDatabase(String completeName){
            // do other things
            this.completeName = completeName;
        }

        public void actionPerformed(ActionEvent e) {    
            // use this.completeName to get that value
        }
   }
}

在actionPerformed中访问变量

2 个答案: