TextNode n1 = new SpanNode();//外层<span> n1.setText("Hello");//正常修改text TextNode n2 = new BoldDecorator(n1);//getText时加一个<b>包围原内容 System.out.println(n2.getText());//调用栈:n2.getText()->n1.getText() TextNode n3 = new BoldDecorator(n2);//getText时加一个<b>包围原内容 //调用栈:n3.getText()->n2.getText()->n1.getText() // n1返回text内容,然后n2加<b>返回,然后n1加<b>返回 System.out.println(n3.getText());//<b><b><span>Hello</span></b></b> //调用栈:n3.setText()->n2.setText()->n1.setText()->this.text = text; n3.setText("HI");//只修改了text System.out.println(n3.getText());//<b><b><span>HI</span></b></b>
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祈祷明天对你也是美好的