Thread: What is wrong with my code.

I looked up some Java problems and made a code for one but it keeps giving the same error on the public classes
import java.util.Scanner;
public class NumbersDemo
[{
public static void main (String args[])
{
int a = 5;
int b = 7;
}
public static void displayNumberPlus10(a) {
System.out.println(a+10);
}
public static void displayNumberPlus10(b) {
System.out.println(b+10);
}
public static void displayNumberPlus100(a) {
System.out.println(a+100);
}
public static void displayNumberPlus100(b) {
System.out.println(b+100);
}
public static void displayNumberPlus1000(a) {
System.out.println(a+1000);
}
public static void displayNumberPlus1000(b) {
System.out.println(b+1000);
}
public static void displayTwiceTheNumber(a) {
System.out.println(a*2);
}
public static void displayTwiceTheNumber(b) {
System.out.println(b*2);
}

}]

It keeps giving me this error and I cant seem to fix it

----jGRASP exec: javac -g NumbersDemo.java
NumbersDemo.java:9: error: <identifier> expected
public static void displayNumberPlus10(a) {
^
NumbersDemo.java:12: error: <identifier> expected
public static void displayNumberPlus10(b) {
^
NumbersDemo.java:15: error: <identifier> expected
public static void displayNumberPlus100(a) {
^
NumbersDemo.java:18: error: <identifier> expected
public static void displayNumberPlus100(b) {
^
NumbersDemo.java:21: error: <identifier> expected
public static void displayNumberPlus1000(a) {
^
NumbersDemo.java:24: error: <identifier> expected
public static void displayNumberPlus1000(b) {
^
NumbersDemo.java:27: error: <identifier> expected
public static void displayTwiceTheNumber(a) {
^
NumbersDemo.java:30: error: <identifier> expected
public static void displayTwiceTheNumber(b) {
^
8 errors

----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.



Please help

NumbersDemo.java:9: error: <identifier> expected
public static void displayNumberPlus10(a) {

There needs to be a definition for the data type of the method's argument. For example:

public static void displayNumberPlus10(int a) {

Please edit your post and wrap your code with code tags:

[code]
**YOUR CODE GOES HERE**
[/code]

to get highlighting and preserve formatting.

method displayNumberPlus100(int) is already defined

You can only define a method with the same arguments once in a class.

Take a look at the tutorial: https://docs.oracle.com/javase/tutor...O/methods.html

Look at how to use code tags again. the full text must be used not just a [