Java compilation with external jars: cannot find symbol

Most Wanted :

I'm trying to compile a war project like this

javac -classpath "/home/user/gwt-2.8.2/*:/home/user/externalJars/*:/home/user/myapp/src:/home/user/myapp/lib/*" -d build $(find * | grep "\.java")

but it throws an error

myapp/src/com/myorg/webservices/server/service/reports/jfreeCustomizers/barChart/BarChartHelper.java:15: error: cannot find symbol
import org.jfree.chart.StandardChartTheme;
                      ^
  symbol:   class StandardChartTheme
  location: package org.jfree.chart
myapp/src/com/myorg/webservices/server/service/reports/jfreeCustomizers/barChart/BarChartHelper.java:21: error: cannot find symbol
import org.jfree.chart.renderer.category.StandardBarPainter;
                                        ^
  symbol:   class StandardBarPainter
  location: package org.jfree.chart.renderer.category
myapp/src/com/myorg/webservices/server/service/reports/jfreeCustomizers/stackedAreaChart/TotalComparisonHelper.java:42: error: cannot find symbol
import org.jfree.chart.renderer.category.StandardBarPainter;
                                        ^
  symbol:   class StandardBarPainter
  location: package org.jfree.chart.renderer.category
myapp/src/com/myorg/webservices/server/service/reports/jfreeCustomizers/stackedAreaChart/NetSavingsHelper.java:18: error: cannot find symbol
import org.jfree.chart.StandardChartTheme;
                      ^
  symbol:   class StandardChartTheme
  location: package org.jfree.chart
myapp/src/com/myorg/webservices/server/service/reports/jfreeCustomizers/stackedAreaChart/TotalComparisonHelperV2.java:33: error: cannot find symbol
import org.jfree.chart.renderer.category.StandardBarPainter;
                                        ^
  symbol:   class StandardBarPainter
  location: package org.jfree.chart.renderer.category
5 errors

It's pretty strange because I have jcommon-1.0.8.jar and jfreechart-1.0.7.jar within /home/user/externalJars/ directory. What is the possible reason of this unclean compilation?

javac -version
javac 11.0.2
java -version
openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.18.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)

manouti :

I believe the jfreechart Jar is of an old version. The class StandardChartTheme is introduced in 1.0.11 (as per the linked Javadoc), and you're using 1.0.7.

Java compilation with external jars: cannot find symbol

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