Error Cannot Find Symbol Class Bufferedreader
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us error cannot find symbol class textview Learn more about Stack Overflow the company Business Learn more about hiring developers error cannot find symbol class cordovaactivity or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow error cannot find symbol class builder Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Java compile error: Cannot Find Symbol for BufferedReader error cannot find symbol class googleplayservicesclient up vote 1 down vote favorite Hey I'm just starting my first programming book on java so this should be an easy fix. Messing around with my fresh knowledge of conditionals and I'm getting the title error. Here's the code: import java.io.*; public class Hello { public static void main (String args[]) { BufferedReader br = new BufferedReader(ip); InputStreamReader ip = new InputStreamReader(System.in); String str; System.out.print("Enter your
Error Cannot Find Symbol Class Intent
name: "); str = br.readLine(); System.out.println(str); System.out.println("Welcome to the world of Java Programming!"); } } When I tried to compile: Hello.java:6:error:cannot find symbol BufferedReader br = new BufferedReader(ip); symbol: variable ip location: class Hello 1 error java share|improve this question asked Jul 2 '15 at 16:31 Java Boy 61 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote You are referencing ip before it's declared. Change the order to: InputStreamReader ip = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(ip); share|improve this answer answered Jul 2 '15 at 16:32 Mena 31.1k94458 add a comment| up vote 1 down vote Try This :- import java.io.*; public class Hello { public static void main (String args[]) { InputStreamReader ip = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(ip); String str; System.out.print("Enter your name: "); str = br.readLine(); System.out.println(str); System.out.println("Welcome to the world of Java Programming!"); } } Basically, you first need to declare a variable before using it. Like you need to declare a variable InputStreamReader ip = new InputStreamReader(System.in); before using it here BufferedReader br = new BufferedReader(ip);. Moreover start your learning from Java Docs share|improve this answer answered Jul 2 '15 at 16:40 Ankit Nigam 2,0131516 ad
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and
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policies of this site About Us Learn more about Stack Overflow the company error cannot find symbol class locationclient Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users error cannot find symbol class hashtable Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a http://stackoverflow.com/questions/31189997/java-compile-error-cannot-find-symbol-for-bufferedreader minute: Sign up Getting 'cannot find symbol' error up vote 0 down vote favorite I am getting cannot find symbol error. I am making a program that could perform various mathematical operations. I am getting the error here: a=Double.parseDouble(in.readLine()); The error is: cannot find symbol- method readLine() I am giving my whole program: // I(Rachit Bhargava) am writing my first program http://stackoverflow.com/questions/19762360/getting-cannot-find-symbol-error that includes almost every feature of Mathematical Operations. import java.io.*; import java.lang.*; import java.lang.Math; public class All_In_One { public static void main(String args[])throws IOException { InputStreamReader in = new InputStreamReader(System.in); BufferedReader read = new BufferedReader(read); double a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, r, s, t, u, v, w, x, y, z, i1, a1, i2, a2; char ch1, ch2; System.out.println("To which topic is your question based upon?"); System.out.println("Enter 'm' for Mathematics and 'g' for Geometry"); System.out.println("Please enter your choice."); ch1= (char)(in.read()); switch (ch1) { case 'm': System.out.println("What operation do you want to do?"); System.out.println("Enter 'a' for addtion, 's' for subtraction, 'm' for multiplication, 'd' for division, 't' for finding out simple interest(with amount), 'c' for finding out compound interest(with amount) and 'b' for finding out both(with amount) and their difference"); System.out.println("Please enter your choice."); ch2= (char)(in.read()); switch (ch2) { case 'a': System.out.println("Please enter first number."); a=Double.parseDouble(in.readLine()); System.out.println("Please enter second number."); b=Double.parseDouble(in.readLine()); c = a+b; System.out.println("Sum = "+c); break; case 's': System.out.println("Please enter first number."); a=Double.parseDouble(in.readLine()); System.out.println("Please enter second number."); b=Double.parseDouble(in.readLine()); c = a-b; System.out.pr
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us http://stackoverflow.com/questions/15285652/i-get-cannot-find-symbol-error-in-compile-time Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow https://ubuntuforums.org/archive/index.php/t-1677413.html Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up i get cannot find symbol error in compile error cannot time up vote -1 down vote favorite import java.io.File; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.*; import java.io.InputStream; class pbdemo { static public void main(String[] args) throws Exception { String s; try { ProcessBuilder pb = new ProcessBuilder("cmd", "/f", "dir"); pb.directory(new File("F:\\WINDOWS")); pb.start(); BufferedReader br = new BufferedReader(new InputStreamReader(pb.getInputStream())); while ((s = br.readLine()) != null) System.out.println(s); } catch (Exception e) { System.out.println("sorry" + e); } } } what is error cannot find the problem in BufferedReader br=new BufferedReader(new InputStreamReader(pb.getInputStream())); I get cannot find symbol error. java share|improve this question edited Mar 8 '13 at 2:27 Iswanto San 11.1k82957 asked Mar 8 '13 at 2:24 user2146775 83 2 How about cut and paste the actual error message. It should tell you which of the 3 possibilities on that one line can't be found. –John3136 Mar 8 '13 at 2:26 seem duplicate : stackoverflow.com/questions/15286042/… –Iswanto San Mar 8 '13 at 3:43 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote Simple answer. ProcessBuilder don't have getInputStream method. See this: ProcessBuilder You can use: BufferedReader br=new BufferedReader(new InputStreamReader(pb.start().getInputStream())); share|improve this answer answered Mar 8 '13 at 2:31 Iswanto San 11.1k82957 add a comment| up vote 0 down vote You are trying to get an InputStream from a ProcessBuilder and that's wrong. ProcessBuilder.start() returns a Process object, and that's the one who has a getInputStream() method. Try switching that line for this one. BufferedReader br=new BufferedReader(new InputStreamReader(pb.start().getInputStream())); Or Process pro = pb.start(); BufferedReader br=new BufferedReader(new InputStreamReader(pro.getInputStream())); share|improve this answer edited Mar 8 '13 at 2:33 Iswanto San 11.1k82957 answered Mar 8 '13 at 2:30 Héctor Luaces Novo 42431
for a real beginners java program i made, im pulling my hair out trying to spot my error, experienced users will probably spot it straight away. The compiler tells me it cant find the symbol for the BufferedReader class but ive imported java.io.* Ive already made a program that accepts user input and the syntax looks the same, obviously it isnt though, where have i slipped up?? // Tax Calculator // Mark Skinner // Created 28/01/2011 import java.text.DecimalFormat; import java.io.*; public class tax_calculator { public static void main(String args[]){ // Declare and instantiate buffer BufferedReader reader; reader = new BufferedReader(new InputStreamReader(System.in)); // Declare decimal precision DecimalFormat two_pnt = new DecimalFormat("0.00"); // Declare Variables float amount = 0, tax_percent = 0, tax_amount = 0, total_amount = 0; String value = ""; try{ // Prompt input System.out.println("--------------£££ Tax Adder £££--------------"); System.out.print("\nPlease enter your transaction amount: £"); value = reader.readline(); amount = Float.parseFloat(value); System.out.print("\nAnd please enter your tax percentage: "); value = reader.readline(); tax_percent = Float.parseFloat(value); System.out.println("\n---------------------------------------------"); System.out.print("\nYour bill of £" + two_pnt.format(amount)); System.out.println(" plus a " + two_pnt.format(tax_amount) + "% tip:"); } // End try catch (IOException ioe) { // Handle exceptions System.out.println("Input Output Error!"); } // End Catch // Calculate Tax tax_amount = amount * (tax_percent /100); total_amount = amount + tax_amount; System.out.print("\nYou have to pay £" + two_pnt.format(tax_amount)); System.out.print(" in tax.\n\n\tTotal Bill: £" + two_pnt.format(total_amount)); System.out.print("\n\nPress enter to exit :"); reader.readline(); } // End main } // End tax_calculator Error mark@mark-desktop:~/Documents/programming/java/java_programming_for_absolute_beginners/chapter_2$ javac tax_calculator.java tax_calculator.java:31: cannot find symbol symbol : method readline() location: class java.io.BufferedReader value = reader.readline(); ^ tax_calculator.java:34: cannot find symbol symbol : method readline() location: class java.io.BufferedReader value = reader.readline(); ^ tax_calculator.java:51: cannot find symbol symbol : method readline() location: class java.io.BufferedReader reader.readline(); ^ 3 errors Some PenguinJanuary 29th, 2011, 12:40 AMreadLine KdotJJanuary 29th, 2011, 10:44 AMSome Penguin has you sorted there. Just some help, when you look at the error in the stack trace (printed out the th