Hi friends,
I hope everyone is doing fine and well. I am wrtting a small applet in java which listens to changes in text fields. Please have a look at my code, then we will talk about it.
Code:
import java.awt.*;
import java.applet.*;
import java.awt.event.TextEvent;
import javax.swing.*;
import java.awt.event.TextListener;
import java.awt.TextComponent;
public class Event_Handling extends Applet implements TextListener
{
String s;
public void init()
{
addTextListener( this ); // Compiler says it(addTextListener) is not defined
addTextListener( this );
TextField tf1 = new TextField();
add( tf1 );
}
public void paint( Graphics g )
{
g.drawString(msg, 50, 50);
}
public void textValueChanged( TextEvent te )
{
msg = "Text value changed";
repaint();
}
}
Java compiler doesn't recognize addTextListener, what must be the problem. It does recognize addMouseListener, but why not addTextListener???
Looking forward to your replies.
Thanks
Moderator's Comments:
Code tags for code, please.
Last edited by Corona688; 04-30-2012 at 12:51 PM..
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LEARN ABOUT SUSE
java-functions
java-functions(7) RPM Java packaging java-functions(7)NAME
java-functions - Functions library for Java applications. Written for the JPackage Project <http://www.jpackage.org/>:
SYNOPSIS
set_jvm()
Set the java virtual machine. Use a JAVA_HOME if defined, or try to find it from java command
set_classpath()
Set the classpath - this functions requires a valid JAVA_HOME, JAVACMD, and JAVA_LIBDIR. JARs could be specified as an argument, or
via ADDITIONAL_JARS variable.
set_javacmd()
set the JAVACMD variable. Options should be passed via JAVACMD_OPTS variable.
set_flags()
set FLAGS variable. They could be specified as an argument, or via ADDITIONAL_FLAGS variable.
set_options()
set OPTIONS variable. They could be specified as an argument, or via ADDITIONAL_OPTIONS variable.
run()
run the application. It executed a following command. If VERBOSE is defined, then it prints the command to stdout.
exec $JAVACMD $FLAGS -classpath $CLASSPATH $OPTIONS $MAIN_CLASS "$@"
set_jvm_dirs()
set JVM-related directories (JVM_LIBDIR, JAVA_VERSION, JAVAVER_LIBDIR and JAVAVER_JNIDIR variables). Requires a correct JAVA_LIBDIR,
JAVA_HOME and JAVA_CMD.
link_jar_repository()
links a jar repository. Options could be found in build-jar-repository(1)
find_jar()
finds a specific extention (jar or directory). Requires a correct JAVA_LIBDIR, JAVAVER_LIBDIR and JVM_LIBDIR. Used by find-jar(1) com-
mand.
do_find_jar()
core routine used by find_jar()
check_java_env()
checks java environment - the JAVA_HOME, JAVACMD, JAVA_LIBDIR, JNI_LIBDIR variables.
DESCRIPTION
This is a library of generic shell functions which should be used on jpackage.org compatible distributions.
FILES
/use/share/java-utils/java-functions
shell script functions library for Java applications
/etc/java/java.conf
system-wide Java configuration file
~/.java/java.conf
user's Java configuration
SEE ALSO
Regular Manual Pages
build-jar-repository(1)find-jar(1)java.conf(5)jpackage-utils(7)AUTHORS
Guillaume Rousse <guillomovitch@sourceforge.net>
Ville Skytta <scop at jpackage.org>
David Walluck <david@jpackage.org>
Nicolas Mailhot <Nicolas.Mailhot at laPoste.net>
REPORTING BUGS
Report bugs using JPackage Bugzilla (http://www.jpackage.org/bugzilla/)
jpackage-utils 1.7.5 February 2009 java-functions(7)
04-30-2012
