设计模式-备忘录模式（二）

public class TextEditor {
    private String text;
    private int cursorPosition;

    public TextEditor(String text) {
        this.text = text;
        this.cursorPosition = 0;
    }

    public void setText(String text) {
        this.text = text;
    }

    public String getText() {
        return text;
    }

    public void setCursorPosition(int cursorPosition) {
        this.cursorPosition = cursorPosition;
    }

    public int getCursorPosition() {
        return cursorPosition;
    }

    public TextEditorMemento createMemento() {
        return new TextEditorMemento(text, cursorPosition);
    }

    public void restoreMemento(TextEditorMemento memento) {
        this.text = memento.getText();
        this.cursorPosition = memento.getCursorPosition();
    }
}