Default font rendering error on Windows Java 8 with 3.5.0

[4ra1n]

On windows Java 8, something is bad

screenshot

Through your article, I have roughly learned that this feature is not proficient in JAVA 8.

Is there a way to disable this feature so that I can use it normally in JAVA 8 with latest version

[4ra1n]

it is ok in JAVA 11/17 only wrong in JAVA 8

[4ra1n]

it is ok in JAVA 8u HIGH version such as 8u391 but wrong in JAVA 8u LOW version such as 8u20

[bobbylight]

Are you using ligatures and/or kerning? Can you provide the input file you’re rendering so I have a test case?

[4ra1n]

@bobbylight

I just new RSyntaxTextArea without other setting

 RSyntaxTextArea rArea = new RSyntaxTextArea(300, 300);

The input is

//
// Jar Analyzer V2 by 4ra1n
// (powered by FernFlower decompiler)
//
package org.example.httpdemo;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

The screenshot on Java 8u131

The screenshot on Java 8u391

Thanks

[bobbylight]

And this rendering error was fine in 3.4.2?

[4ra1n]

@bobbylight

YES it is fine on 3.4.1 with Java 8u131

btw, i use the flatlaf. Is there a connection?

[bobbylight]

It’s doubtful that’s related. But I won’t be able to look k to this until tomorrow most likely. Are you locked into older Windows 8 JREs and unable to update? One thing I was looking at for the next major version was updating our baseline requirement to Java 11.

Also - thanks for digging in so much in your report! Very helpful

[4ra1n]

@bobbylight

thanks

Due to the fact that Java8 is still LTS at present, and upgrading Java8 to Java11 is destructive, I may not plan to upgrade.
I hope you can provide support for Java8 in future versions.

In fact, this issue does not exist in the latest version of Java 8 and only affects older versions. The priority for fixing it is not high. The issue here only indicates the existence of the problem and does not necessarily need to be fixed

[bobbylight]

Aye, my first thought is to look through JRE release notes for font rendering changes/fixes, but if something changes on my end I may be able to address it

[bobbylight]

I can't reproduce this with java 8u20 on Windows. Can you provide an SSCCE that demonstrates this behavior?

Here's what I see with 8u20:

[4ra1n]

You can download my project: https://github.com/jar-analyzer/jar-analyzer/releases/download/2.20/jar-analyzer-2.20-windows-system.zip

And run it

"C:\Program Files\Java\jdk1.8.0_20\bin\java.exe" -jar lib\jar-analyzer-2.20.jar gui

Open a small jar and press start engine button

Then chose a class in left file tree to decompile

screenshot

If I copy the code to a txt

[bobbylight]

4ra1n sorry for the late reply. Can you provide a smaller example - an SSCCE usually has no dependencies to make it easier to debug and identify the cause.