文本编辑器源文件(java语言)

文本编辑器源文件(java语言)(38) while((line=datain.readLine())!= null)
{
                line+= "\n";
                if(input== null)
                    input= line;
                else
                    input+= line;
        }
        }catch(IOException e){
            System.out.println("Error in reading file");
        }
        current_t.open(input);

try{
in.close();
}catch(IOException e){
System.out.println("e");
}
}   

public void write(String fn,String fd)
{
FileOutputStream out= null;
        File s= new File(fd,fn);

try{
            out= new FileOutputStream(s);
        }catch(Exception e)
        {
            System.out.println("Unable to open file");
            return;
        }
PrintStream psOut=new PrintStream(out);
psOut.print(current_t.getText());///
try{
out.close();
}catch(IOException e){
System.out.println("e");
}
}

public boolean keyDown(Event evt,int key)
{
        System.out.println(key);
        switch(key)