我定义了一个方法,执行成功返回true,否则false.
public boolean save(String str)
{
try{
FileWriter fw=new FileWriter("poll.txt",true);
BufferedWriter bw=new BufferedWriter(fw);
bw.write(str);
......}
怎么判断是否执行成功啊
public boolean save(String str)
{
try{
FileWriter fw=new FileWriter("poll.txt",true);
BufferedWriter bw=new BufferedWriter(fw);
bw.write(str);
......}
怎么判断是否执行成功啊
catch (Exception e) {
ErrorMessage err = new ErrorMessage("");
e.printStackTrace();
err.setMessage("执行插入失败!");
return false;
}
if( err.getMessage().length()==0)
{
System.out.println("插入成功");}
else{ System.out.println(err.getMessage());}