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Java 8u40 on OS X Yosemite
(1 answer)
Closed 7 years ago.
I'm unable to enter text into text boxes in windows/dialog boxes produced by Java. For example, I can't type text into Sun's "How to use text fields" example, (linked to from here). However, I am able to click buttons in Java's windows.
I'm running on a Mac with the latest version of OS X (Yosemite 10.10.2), and the Java System Preferences pane assures me that I'm using the "recommended" version of Java (Java 8 Update 40). I should add that I'm running stuff via Java Web Start here, which generates some security warnings.
I told Java to enable the Java Console but it seems only to be showing start-up boiler-plate.
EDIT: to be clear, I'm able to reproduce this issue even in code from the makers of Java, so I don't think the fix will be something as simple as add a line or two to my code.
If you know the name of textbox you can add text;
Let the name of your textbox is mytextbox
mytextbox.setText("The text what you want to write");
Perhaps you have to set the
textBox.setEditable(true)
Related
I'm struggling with specifying which one of the many java installations on my Windows 7 machine would be used by the Internet Explorer for (1) running applete as well as (2) for Java web start.
For example, I am going to that Java-View tab in Java Control Panel, change the checkbox there, then make Java Console visible in the advanced tab and then find from the Console header that not always Java which is checked in the Java-View is actually executing applets in my browser.
In Java Control Panel Java-View along with the "User" tab, there is also a "System" tab.
One usually cannot change anything there, but what does that mean, and does it play any role?
In Java Control Panel Advanced tab you see "Default Java for browsers" checkboxes.
Why Microsoft Internet Explorer checkbox there is always checked and always grayed out?
Is this checkbox important or is it Java-View tab screen, which actually affects IE operations?
Also in jre/bin folder of each java instalation I see javacpl.exe file and can execute each of them, but only one of them, I guess, appears in actual computer Control Panel. How do you determine, which of them is really shown and can be executed through my computer Control Panel? Does it make sense to do anything with alternative javacpl.exe executables - will their execution affect my IE java-related functionality.
Basically, I'm in total confusion of how this mechanism works, and wwould very much appreciate if someone could give some clarification on at least some part of the above questions. And I'm mostly talking here about Java 1.6 and Java 1.7, I guess it would be even more difficult if we try to cover in this question also older java versions.
Thanks a lot for any help on this subject.
Regarding your first question
" which one of the many java installations on my Windows 7 machine would be used by the Internet Explorer for (1) running applete as well as (2) for Java web start."
This can be tested by making your applets contain Java 7 features like "Diamond Operator". Compile it by jdk 1.7 and then try to run in browser, if it runs then your browser is using 1.7 else 1.6.
Second ques -
"In Java Control Panel Java-View along with the "User" tab, there is also a "System" tab. One usually cannot change anything there, but what does that mean, and does it play any role?"
Answer- This is my guess that system tab will contain that option which is configured in JAVA_HOME environment variable OR it can that jdk which was installed more recently installed. Because offcourse default can be only one and not two.
Third question -
"In Java Control Panel Advanced tab you see "Default Java for browsers" checkboxes. Why Microsoft Internet Explorer checkbox there is always checked and always grayed out? Is this checkbox important or is it Java-View tab screen, which actually affects IE operations?"
Answer - The option is grayed out because the option is already chosen for you and you need not specify that.
Hope that helps.
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How to tell Eclipse to show content assist automatically?
(2 answers)
Closed 8 years ago.
I recently downloaded and installed Eclipse Standard/ SDK, version: Kepler Service Release 2.
In the past, when using Eclipse, there has been an 'autocomplete' function available when typing, that would try to 'guess' what keywords and variable names you were typing- if it guessed the correct one, you just had to press 'tab' to get it to fill in automatically for you.
However, this autocomplete function doesn't seem to work with the current version of Eclipse that I'm using... and I can't seem to find a way to turn it on- I've tried Edit -> Word Completion, and Edit -> Content Assist, but neither of these options seem to make a difference.
Any suggestions?
Go to, Window >> Preferences >> Java >> Editor >> Content Assist >> Auto activation triggers for java, and enter .abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ , this will trigger the auto activation for class names, methods, etc...
My answer here.
Using Java 7 Update 5 always causes complications with Java apps (for me, notably MineCraft) because it attempts to use IPv6. Disabling IPv6 doesn't save this at all.
Every bit of information I found keeps saying to use a batch file to tell java to start the program with the "-Djava.net.preferIPv4Stack=true" parameter. This does fix my problem, but I would like to not start things with batch files.
Is there a way to set this for Java 7 globally? I've gone to the Java Control panel in the Java tab and set "-Djava.net.preferIPv4Stack=true" as a runtime parameter for Java 7 but it doesn't do anything.
Help me, you are my only hope. I would really like to stop using Java 6.
I have the same IPv6 issues with my development box at the office.
Go into your Environment Variables dialog from the Control Panel and create a new System variable called JAVA_OPTS and set the value to be -Djava.net.preferIPv4Stack=true.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Any way to get IntelliJ-like autocompletion in Eclipse?
Is there a way to make Eclipse autocomplete work in a manner similar to one found in NetBeans? I lack completing to the next common part (i.e. type "me", I got suggestion Message, MessageArchive, MessageRouter so the 'tab' would complete to the "Message") and also auto suggesting on "." (or "enter") when there is subsequent possibility.
Tiny things but the lack of them is extremely frustrating…
Goto Window -> Preferences -> Java -> Editor -> Content Assits
In the column Auto activation triggers for Java column, enter this:
.qwertyuioplkjhgfdsazxcvbnm_QWERTYUIOPLKJHGFDSAZXCVBNM
Add any other keys you want. You're done.
You'll have the same effect as Netbeans
Try typing "me" and then pressing Ctrl + Space.
Well if the shortcut: Ctrl+Space doesn't fireup autocompletion, you will need to activate it in your Eclipse IDE.
To do that, go to: Window->Preferences->Java->Editor->ContentAssist and there you can set the parameters that you want.
[EDIT]: Here is a capture to help you with.
The auto complete functionality should be turned on by default. Eclipse pop up a auto complete box after pressing the "." or you can manually do this by pressing STRG + SPACE on PC or CMD + SPACE on a MAC
My Goal
I want to make it so that, on first run, my program will make its icon appear in the Windows 7 Taskbar. I know that the icon files are shortcuts in C:\Users\USERNAME\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar and mostly want to know this:
My Questions
How, in Java, can I create a shortcut file (.lnk)
Is it possible to even access that without admin privileges?
You should not need admin privileges but you do need to do this in context of the user whose taskbar is being changed.
Here's a library which does what you want: http://alumnus.caltech.edu/~jimmc/jshortcut/
There is a Java library providing the new Windows 7 features for Java. It's called J7Goodies by Strix Code. Applications using it can be properly pinned to the Windows 7 taskbar. You can also create your own jump lists, etc.