cannot-find-symbol | 易学教程

java maven COMPILATION ERROR : cannot find symbol

阅读更多关于 java maven COMPILATION ERROR : cannot find symbol

问题 java maven COMPILATION ERROR : cannot find symbol I am using eclipse to build a java maven project from a remote linux machine. I get connected to project using Eclipse Remote System Explorer (RSE). When I want to clean install the project, it seems that maven cannot find some of my classes. This is the error and I the project POM file. Error: [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ rule_miner --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 1

Cannot find Symbol - Variable, despite the variable being declared

阅读更多关于 Cannot find Symbol - Variable, despite the variable being declared

问题 The numThrows Variable is inciting an error of variable not found when used in the main method. even though i declare it in one of the methods. I use the declare the variable in the void prompt method. This program is designed to calculate Pi using random coordinates then uses a formula to estimate pie over a user given amount of tries. import java.util.Random; import java.util.Scanner; import java.io.PrintWriter; import java.io.File; import java.io.IOException; public class Darts public

debug/dataBindingGenBaseClassesDebug/databinding/ActivitySignupBinding.java AndroidX Databiing not working Android Studio Cannot find Symbol

阅读更多关于 debug/dataBindingGenBaseClassesDebug/databinding/ActivitySignupBinding.java AndroidX Databiing not working Android Studio Cannot find Symbol

问题 project/build.gradle buildscript { repositories { maven { url 'https://maven.fabric.io/public' } google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.5.0' classpath 'com.google.gms:google-services:4.0.1' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } allprojects { repositories { mavenCentral() maven { url 'https://maven.google.com' } maven { url 'https://jitpack.io' } google() jcenter() } }

Cannot resolve symbol default_web_client_id in Firebase's Android Codelab

阅读更多关于 Cannot resolve symbol default_web_client_id in Firebase's Android Codelab

问题 I am trying to learn Firebase, so I went through the Android Codelab. The project they gave me however, had an error: Cannot resolve symbol default_web_client_id And I didn't know how to solve it, since I didn't know the value of default_web_client_id or what it is. It is in the onCreate() method: SigninActivity.java @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_sign_in); mFirebaseAuth = FirebaseAuth

How to use a Java class in JSP scriptlet? Error says the class cannot be resolved to a type

阅读更多关于 How to use a Java class in JSP scriptlet? Error says the class cannot be resolved to a type

问题 I have written a sample JSP file in Eclipse and a Java file and was trying to call the Java class inside my JSP but it is not working. The code of the JAVA file is as follows: TestJava.jva public class TestJava { public void test(String msg) { System.out.println("My name is "+msg); } } The Javafile is located at src folder. My JSP file test.jsp is as follows: test.jsp <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <html> <head> <meta http-equiv="Content

What does a “Cannot find symbol” or “Cannot resolve symbol” error mean?

阅读更多关于 What does a “Cannot find symbol” or “Cannot resolve symbol” error mean?

问题 Please explain the following about \"Cannot find symbol\" and \"Cannot resolve symbol\" errors: What does they mean? What things can cause them? How does the programmer go about fixing them? This question is designed to seed a comprehensive Q&A about these common compilation errors in Java. 回答1: 0. Is there any difference between the two errors? Not really. "Cannot find symbol" and "Cannot resolve symbol" mean the same thing. Some Java compilers use one phrase, and some the other one. 1. What