请注释一下下面的代码谢谢

public void update(String path){
  try {
  Workbook book = Workbook.getWorkbook(new File(path));
  Sheet sheet = book.getSheet(0);
  for(int i=1;i<sheet.getRows();i++){
  String id = sheet.getCell(0, i).getContents().trim();
  String word = sheet.getCell(1, i).getContents().trim();
  String level = sheet.getCell(2, i).getContents().trim();
  String cixing = sheet.getCell(3, i).getContents().trim();
  System.out.println(id+","+word+","+level+","+cixing);
  HSKWordLevel wordLevel = this.manager.getHskWordLevelById(NumberUtils.createInteger(id)+8822);
  if(wordLevel != null){
  wordLevel.setCixing(cixing);
  this.manager.updateHskWordLevel(wordLevel);
  }
  }
  } catch (Exception e) {
  e.printStackTrace();
  }
  }
请注释一下，最好把用到的类说明一下，谢谢

------解决方案--------------------
public void update(String path){ 
try { 
Workbook book = Workbook.getWorkbook(new File(path)); //打開path下的Excel文件
Sheet sheet = book.getSheet(0); //定位第一個sheet頁
for(int i=1;i <sheet.getRows();i++){ //按行數循環
String id = sheet.getCell(0, i).getContents().trim(); //取得第一行第二列内容去空格
String word = sheet.getCell(1, i).getContents().trim(); //...
String level = sheet.getCell(2, i).getContents().trim(); //...
String cixing = sheet.getCell(3, i).getContents().trim(); //...
System.out.println(id+","+word+","+level+","+cixing); //打印所取得内容
HSKWordLevel wordLevel = this.manager.getHskWordLevelById(NumberUtils.createInteger(id)+8822); //找到WordLevel為“id+8822”内容
if(wordLevel != null){ 
wordLevel.setCixing(cixing); //將cixing寫入此HSKWordLevel對象中
this.manager.updateHskWordLevel(wordLevel); //更新此對象
} 
} 
} catch (Exception e) { 
e.printStackTrace(); 
} 
}