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Posted to notifications@netbeans.apache.org by "NicolaIsotta (via GitHub)" <gi...@apache.org> on 2023/07/04 08:43:43 UTC
[GitHub] [netbeans] NicolaIsotta opened a new issue, #6149: `Objects.requireNonNull` should disable "Null Pointer Dereference" warnings
NicolaIsotta opened a new issue, #6149:
URL: https://github.com/apache/netbeans/issues/6149
### Apache NetBeans version
Apache NetBeans 18
### What happened
Using `Objects.requireNonNull` should disable "Null Pointer Dereference" warnings. Instead, it doesn't.
### How to reproduce
```java
public static String myToString(Object object) {
Objects.requireNonNull(object);
if (object instanceof Number) {
DecimalFormat df = new DecimalFormat("#.00");
return df.format(((Number) object).doubleValue());
} else {
return object.toString();
}
}
```
### Did this work correctly in an earlier version?
No / Don't know
### Operating System
Windows 10 version 10.0 running on amd64; Cp1252; it_IT (nb)
### JDK
11.0.14.1; OpenJDK 64-Bit Server VM 11.0.14.1+1
### Apache NetBeans packaging
Apache NetBeans binary zip
### Anything else
if `Objects.requireNonNull(object);` is replaced by `if (object == null) throw new NullPointerException();` the warning disappears.
### Are you willing to submit a pull request?
No
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[GitHub] [netbeans] asbachb commented on issue #6149: `Objects.requireNonNull` should disable "Null Pointer Dereference" warnings
Posted by "asbachb (via GitHub)" <gi...@apache.org>.
asbachb commented on issue #6149:
URL: https://github.com/apache/netbeans/issues/6149#issuecomment-1627484452
Here's an additional test for `NPECheckTest` to prove the problem:
```java
public void testObjectsRequireNonNull() throws Exception {
HintTest.create()
.input("package test;\n"
+ "import java.util.Objects;\n"
+ "public class Test {\n"
+ " public String test(Object obj) {\n"
+ " Objects.requireNonNull(obj);\n"
+ " if (obj instanceof Number)\n"
+ " return \"\";\n"
+ ""
+ " return obj.toString();\n"
+ " }\n"
+ "}")
.run(NPECheck.class)
.assertNotContainsWarnings("7:15-7:23:verifier:Possibly Dereferencing null");
}
```
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[GitHub] [netbeans] mbien closed issue #6149: `Objects.requireNonNull` should disable "Null Pointer Dereference" warnings
Posted by "mbien (via GitHub)" <gi...@apache.org>.
mbien closed issue #6149: `Objects.requireNonNull` should disable "Null Pointer Dereference" warnings
URL: https://github.com/apache/netbeans/issues/6149
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