Develop Reference

Eclipse - Enclose selection instead of replacing

In Eclipse, when i select part of a text and press any key, the whole selection is replaced.
I would like to know how to make it, instead of replacing the text, add the key pressed to both ends of the selection, as it happens on visual studio code.
Example:
System.out.println(HelloWorld);
Select Hello World
System.out.println(HelloWorld);
Then press the " button. The code will turn to
System.out.println(");
Can i config the IDE so it will instead change it to
System.out.println("HelloWorld");
There is a already answered question like this one, but considering that one as 7 years and a lot of version old, and also considering that the answer on that one is kind of a work around, i would like to know if there's any new plugin or configuration that make it work better

From what I gather, you are wanting to do something like this?
Go to Java > Editor > Templates and add a new template, e. g. called quote, as follows:
"${word_selection}"${cursor}
Then, in the editor, write a text you want to quote, select it, press Ctrl+Space, type quote and hit Return. The highlighted text should be quoted now.
If you don't get template proposals when pressing Ctrl+Space, make sure you have them checked in Java > Editor > Content Assist > Advanced.
Just tried it and it works for me!
You can use this method for other things, like (${word_selection})${cursor} for parenthesis or '${word_selection}'${cursor} for single quote.

Unexpected Intellij Auto Complete Results

Hey there basically I'm seeing unexpected auto completion by intellij. I have tried multiple way to get it to work the way I expected it to and can't.
https://www.webmshare.com/play/yAPxo
The first line is what happens when you press tab to auto complete something and the following is when you click it in the menu.
I was wondering if it is possible to change the behavior so when I press it TAB it follows the behavior of the second line.
Thanks.

I came from work, I am glad it worked for you, so I wanted to add it as an answer.
Enter is the key for what you click in the menu to autoComplete. Tab replaces the remaining part, whereas enter just adds the completion into where the caret is. You should be able to change keys for those actions. To change those keys:
Open preferences in Intellij and go to Keymap
Change Choose Lookup Item with whichever key you want to use (it is tab key in your case I presume)

Eclipse. How to activate tooltip popup using shortcut?

for example we have following method:
...
public void method1(){
method2();
}
...
method2 can throws exception and Eclipse offer either wrap by try catch or declare throws declaration.
Each time I need pick up the mouse and hover mouse cursor to this row.
Is it possible select wrap or throws without using mouse?

I think that 'F2' is the right key to see the tooltip visible when hoovering mouse over an item in Eclipse editor. It may contain suggestions of fixing if there's a problem with the item being hoovered over. The functionality is called "Show Tooltip Description".
Mentioned in other answers shortcut Ctrl+1 shows a "Quick Fix" tooltip which is slightly a different trick than "Show Tooltip Description". I would say that both tooltip provide user with some common functionalities but both offer also their own options.

Yes, use Ctr+1keyboard shortuct. In your case, it is called quick fix and it works errors and warnings. With the same shortcut you can use quick assists, they are used for local code manipulations. Read more HERE.
Regards

Move your cursor to the method and press Ctrl+1, then use your arrowkeys. This trick (ctrl+1) can help you speed up development for a lot of things, like automaticly assign statements to variables.

Press F2 for focus,
Using Ctrl + 1 for proposal table,

I am not able to see the value of variable in jsp page when i hover the mouse on it

I am not able to see the value of the variable in JSP page. When I hover the mouse on it. It shows the type of the class. I am in debug mode and I am checking the variable after the line is executed. It works absolutely fine. When I see variables in java file. both the files are in the same project.
window >> preference>>java/j2ee>>editor>>hovers
....combined hovers are checked...

I ran into same issue recently. I found this. It might be helpful for you.
Also one quick workaround is that you can punch out System.out.println() statements to check the values. It might be painful though, and make sure to remove them once you are done.

select The variable and
press Cntrl + shift + i
and you will get value of selected variable in debug mode

Viewing complete strings while debugging in Eclipse

While debugging Java code, Strings in the views "Variables" and "Expressions" show up only till a certain length, after which Eclipse shows "..."
Is there any way to inspect the entire string? (This eases the pain of adding logging statements for debugging everywhere)

In the Variables view you can right click on Details pane (the section where the string content is displayed) and select "Max Length..." popup menu. The same length applies to expression inspector popup and few other places.

In the Variables view you right-click on the variable and select Change value. If your variable is huge you have to wait a few minutes (in this case Eclipse doesn't respond to commands) but in the end Eclipse will show your variable entirely.

If you have a really long string, I use a different strategy: dump it to a file. I have a snippet of code I use in the Display view, which is evaluated to dump the data to a file. I use Commons IO, but you can do it with JDK only methods.
org.apache.commons.io.FileUtils.writeStringToFile(new java.io.File("<filename>"), <expression to evaluate>);
Naturally, you will need the Commons IO JAR in your classpath for that to work. If you don't, resort to JDK work.

The best way to view a String value from eclipse debug view is as below.
1) Switch to debug view in Eclipse
2) Select the desired variable in variable pane.
3) Right click on display area of variable pane where value is shown and click on Max Length. Enter the maximum char value in Configure Details Pane .
4) Cheers

When debugger reaches the point where you want the String value, just type a sysOut statement
System.out.println("The value is : \n " + query);
Select the above the statement, right click-> Execute
It will print the value on the console

For javascript based debugging on eclipse, "change value" method and "Max length" method both failed for me, adding the required object to watch(Expressions) and then Right Clicking the watched expression to select "Load Full Value" is the only solution that works for me, but even this inserts unwanted "\n" in the output.
Note - "Max length" must be set for the "Load Full Value" to work as it loads values till max length(default in eclipse is 10000). Refer above answer to see how to set Max length.

There is no "maxLength" in Eclipse Mars. And, the "change value" only works with "Variables", not "Expressions", so none of above works for me.
And, the expression are cut in the middle, not at the end. I guess they changed the default behaviour.
The only thing working for me, is to expand the expression name column's width, and click the expression to select it all to see the full length content.

Nothing from the above worked for me, moreover, some user interface elements in my Eclipse can not be found as described. I'm using STS 4.3.1.
The value I needed was really big, it is part of a huge JSON request. Workaround is to use an expression in Eclipse Debug Shell console and to output the substring of the whole value. Since you can see the partial value, inspect it and use the last few literals as the position to output the next chunk of the string. Repeat this approach until get what you need:
String result = new String(reallyBigByteArrayValue, "UTF-8");
result.substring(result.indexOf("some-unique-text"));

In Eclipse IDE 2020-09 it's "Pretty print to console" on right click.
From the console the copying is possible at full length.