Getting illegal start of expression as error

Getting illegal start of expression as error

Im trying to run the program again, and now i'm getting this error.
here is my code:
public static void writeBirdtype() {
private String readFileAsString(String filePath) throws IOException {
StringBuffer fileData = new StringBuffer();
BufferedReader reader = new BufferedReader();
new FileReader(filePath);
char[] buf = new char[1024];
int numRead=0;
while((numRead=reader.read(buf)) != -1){
String readData = String.valueOf(buf, 0, numRead);
fileData.append(readData);
}
reader.close();
return fileData.toString();
}
error:
Oblig2.java:72: error: illegal start of expression
private String readFileAsString(String filePath) throws IOException {
^
Oblig2.java:72: error: ';' expected
private String readFileAsString(String filePath) throws IOException {
^
Oblig2.java:72: error: ';' expected
private String readFileAsString(String filePath) throws IOException {
^
Oblig2.java:72: error: not a statement
private String readFileAsString(String filePath) throws IOException {
^
Oblig2.java:72: error: ';' expected
private String readFileAsString(String filePath) throws IOException {
^
5 errors
How can I fix this?
Thanks alot for help