Read A Character From Keyboard - Illegal Start Of Expression
Jul 1, 2014
I need to know why this program is giving me error (illegal start of expression). What must i do to stop the error?
//Read a character from keyboard
class Kbin{
public static void main(String[]args){
throws java.io.IOException{
char ch;
System.out.print( " Press a key followed by ENTER: ");
ch = (char) System.in.read();//read character from keyboard
System.out.println( "Your key is: " + ch);
}
}
}
I am getting the error "Line 54, illegal start of expression". Line 54 is where my "for" starts. It was running ok earlier, now I can't get this error to go away?
Lines 7 , 10 ,13 .... All have a Illegal Start of Expression error.
[color=blue]private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { Random rd = new Random(); int random = 0; random=rd.nextInt(6)+1; switch(random){
why the complier is giving the following error message "illegal start of expression" once it reach the countSpaces method.The way I see it (and I am obviously seeing it wrong), the code is public since why not, int since it returns an int # and the method has return int in it, and static I am not too sure but I get the same error message whether or not it is included
public static void main (String args[]) { Scanner in = new Scanner(System.in); String sentence; System.out.println("type a sentence"); sentence = in.nextLine(); countSpaces (sentence);
Why does this not work? I get an ']' expected at the y in the fourth line of code and an illegal start of an expression at the actual ] in the same line
int y = 0; JTextField response[] = new JTextField[10]; while(y < 10) { JTextField response[y] = new JTextField(7); add(response[y]); response[y].addItemListener(this); ++y; }
Here is my program and results and I am having a error on line 38 which is "public static long fib01(long paramLong)" The program does give me my results but I am trying to correct there error.
public static void main(String[] args) { { System.out.print("
" + String.format("%-10s", new Object[] { "Index" })); System.out.print(String.format("%-15s", new Object[] { "Fibonacci01" })); System.out.print(String.format("%-15s", new Object[] { "Fibonacci02" })); System.out.println(String.format("%-15s", new Object[] { "Fibonacci01" }));
I'm working on a program and can't seem to fix my for loop error.I get an error at the for loop line saying illegal start of expression and i don't know how to fix it:
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */
public static void main(String[] args) { Scanner Keyboard = new Scanner(System.in); System.out.print("Please enter your name."); String name = Keyboard.next(); name = "name";
I'm attempting to create a program that employs a method to count the number of 7s a user puts as an input into the program. I'm just getting started, but I'm getting an error when I try to implement a main method that says "Illegal start of expression"
What adjustments could I make to eliminate this error message?
// Add a main method here. public static void main(String[] args) { //Error occurs here public static int countSevens(int n) { // 0. Clean-up. Get rid of any minus signs as that is not a digit. n = Math.abs(n);
I'm working through Head First Java, and I'm struggling with the chapter 6 magnet exercise on page 161. I've checked my answer countless times, and it appears to match the book's code, but when I try to run it on my computer I'm getting an error. It says:
error: <identifier> expected System.out.println^(" "); and
error: illegal start of type System.out.println(^" ");, both for line 32.
I cannot seem to figure out what is different about my code!!
import java.util.*;
public class ArrayListMagnet { public static void main (String [] args) { ArrayList<String> a = new ArrayList<String>(); a.add (0, "zero"); a.add(1, "one"); a.add(2, "two"); a.add(3, "three");
[Code] .....
Also, I'm not sure if this has anything to do with the above errors, but I'm getting a third error message for line 34 saying:
the boy is smart He is from Australia ** Highly important line That's all
Now, I need a regular java expression that would match a line in this file that begins with the ** characters. That is, when I match the text with the regex, I should get only this line :
Basically i have a question ask me to write a program that read integer from keyboard until a negative number is entered, and then print out the max and min out of the number i have entered.
This is what i have done already which works, but i need to ignore the negative number when print out max and min...which i dont know how to do so. when i compile this program now it will always give me the negative number i enter at the end as minimum. which i need to ignore
Also if negative number is entered at once the program should print a error message say max and min are undefined.
public static void main(String[] args) {
Scanner in = new Scanner(System.in); int large = Integer.MIN_VALUE; int small = Integer.MAX_VALUE; while(true) { System.out.print("Enter a integer: "); int n = in.nextInt();
I wrote a program to read a .txt file and return how many times a, e, s, and t occur in the .txt file. I am getting an error that I do not know how to fix. It says Error: FileNotFoundException cannot be resolved to a type...
import java.util.Scanner; import java.io.File; import java.io.IOException; import java.io.BufferedReader; public class Count { public static void main (String[] args) throws FileNotFoundException { String phrase; // a string of characters
import java.util.Scanner; public class Project_5 { public static void main (String[] args) { Scanner input= new Scanner (System.in);
[code]....
So I'm attempting to have this program take the users input of integers, pressing enter in between each one. If they enter a negative number it lets them know that its invalid. At the end of the program it takes all of the valid integers entered and must add them and average them. I've put the final println in there as a placeholder. If the user types in "6" then presses enter and types in "3" , the output is:
There were 3 valid numbers entered. The sum of the valid numbers was --- and the average was ---. There were 0 invalid numbers entered.
It then continues on allowing the user to enter more values. Here is the example output for correct code"
Enter a positive value (EOF to quit): 4 Enter a positive value (EOF to quit): 7 Enter a positive value (EOF to quit): 8 Enter a positive value (EOF to quit): 2 Enter a positive value (EOF to quit): -1 The number "-1" is invalid.
Enter a positive value (EOF to quit): 8 Enter a positive value (EOF to quit): 0 Enter a positive value (EOF to quit): -4 The number "-4" is invalid.
Enter a positive value (EOF to quit): CTRL-D
There were 6 valid numbers entered. The sum of the valid numbers was 29 and the average was 4.83. There were 2 invalid numbers.
I use Eclipse (kepler version, with JDK 7) on MacBook Pro (Lion).I want to overwrite a line printed on my console. I used "" for that. I was expecting the cursor to go to the beginning of the line. Instead, it is going to the next line.
