parser/java: output instability

[Hoblovski]

Describe the bug

The java parser generates different outputs for the same input.

To Reproduce

1. clone main branch and build abcoder
2. run abcoder on testdata/java/4_full_maven_repo twice
3. compare the generated uniasts (using the smart diff script)

Expected behavior

For the same repo, abcoder should generate two identical uniASTs.

Screenshots

[~/Programs/test/arti/java/abcoder]   [main  =]   [05:43:56 PM]   zhenyang
$ git status
On branch main
Your branch is up to date with 'origin/main'.

nothing to commit, working tree clean

[~/Programs/test/arti/java/abcoder]   [main  =]   [05:43:57 PM]   zhenyang
$ go build

[~/Programs/test/arti/java/abcoder]   [main  =]   [05:44:02 PM]   zhenyang
$ ./abcoder parse java testdata/java/4_full_maven_repo -o java_1.json
2025/09/26 17:44:13 Using JDTLS_ROOT_PATH from environment: /home/zhenyang/O/data/Programs/bytedance/LanguageServers
[ERROR]17:44:13 client.go:264: LSP server stderr: OpenJDK 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release.
[ERROR]17:44:14 client.go:264: LSP server stderr: Sep 26, 2025 5:44:14 PM org.apache.aries.spifly.BaseActivator log
[ERROR]17:44:14 client.go:264: LSP server stderr: INFO: Registered provider ch.qos.logback.classic.servlet.LogbackServletContainerInitializer of service jakarta.servlet.ServletContainerInitializer in bundle ch.qos.logback.classic
[ERROR]17:44:14 client.go:264: LSP server stderr: Sep 26, 2025 5:44:14 PM org.apache.aries.spifly.BaseActivator log
[ERROR]17:44:14 client.go:264: LSP server stderr: INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic

[~/Programs/test/arti/java/abcoder]   [main =]   [05:44:47 PM]   zhenyang
$  ./abcoder parse java testdata/java/4_full_maven_repo -o java_2.json >/dev/null 2>&1

[~/Programs/test/arti/java/abcoder]   [main =]   [05:45:06 PM]   zhenyang
$ ./script/diffjson.py java_1.json java_2.json 2>&1 | head

Differences found between 'java_1.json' and 'java_2.json':

Value Changed at: root['Modules']['com.example.test:core-module:1.0.0-SNAPSHOT']['Packages']['com.example.core.repository']['Types']['InMemoryUserRepository']['Methods']['findAll()']['Name']
  - old: 'findAll()'
  + new: 'InMemoryUserRepository.findAll()'
--------------------
Value Changed at: root['Modules']['com.example.test:core-module:1.0.0-SNAPSHOT']['Packages']['com.example.core.repository']['Types']['InMemoryUserRepository']['Methods']['save(User)']['Name']
  - old: 'InMemoryUserRepository.save(User)'
  + new: 'save(User)'
--------------------

Version:

main branch

Environment:

The output of go env.

Additional context

Add any other context about the problem here.

[Hoblovski]

结果不稳定不一定能够代表结果错了，也不一定代表后续用不了（因为 LLM 纠错能力很厉害）。
但是它通常代表解析器实现可能漏了一些考虑，有一些小 bug。