I want to print the object values. I cant get access to it and dont know how to do it.
i cant acess it with value()
here is my code:
public class txtdatei {
private String pickerName;
private String language;
private float volumeGain;
private long pickerId;
private static Map<Long,txtdatei> mapp=new HashMap<Long,txtdatei>();
public txtdatei(String username, String language, float volume){
this.pickerName=username;
this.language=language;
this.volumeGain=volume;
}
public static void main(String[] args){
File file=new File("test.txt");
try{
file.createNewFile();
FileWriter writer =new FileWriter(file);
writer.write("username\tbenni\tlanguage\tgerman\n");
writer.flush();
writer.close();
FileReader fr =new FileReader("test.txt");
BufferedReader reader= new BufferedReader(fr);
String zeile=reader.readLine();
String [] data=zeile.split("\t");
int i=0;
for(i=0;i<data.length;i++)
{
if(data[i].equals("Username"))
{
mapp.put((long)(1),new txtdatei(data[2],data[4],Float.parseFloat(data[6])));
}
}
System.out.println(mapp.get(1)); //dont know how to read the
}catch(IOException ioe){ioe.printStackTrace();}
}
hope someone can help me,
Thanks.
Here is one solution for getting each value of map using the key.
for(Long value: mapp.keySet()){
System.out.println(mapp.get(value));
}
hope it helps.
First, you set the key being Long, so when you use Map.get((Object)key), u need give a Long to retrive the value.I think 1 is translated to Integer by jvm,thats why you can't get the value. Try this, it should work:
mapp.get((long)1)
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