Hello,
The code in java.lang.Throwable has various explicit null checks that
could be rewritten to use Objects.requireNonNull.
Please review the patch below which implements this refactoring.
Thanks,
-Joe
diff -r 274361bd6915 src/java.base/share/classes/java/lang/Throwable.java
--- a/src/java.base/share/classes/java/lang/Throwable.java Thu Mar 07
10:22:19 2019 +0100
+++ b/src/java.base/share/classes/java/lang/Throwable.java Fri Mar 08
02:06:42 2019 -0800
@@ -874,8 +874,7 @@
// Validate argument
StackTraceElement[] defensiveCopy = stackTrace.clone();
for (int i = 0; i < defensiveCopy.length; i++) {
- if (defensiveCopy[i] == null)
- throw new NullPointerException("stackTrace[" + i + "]");
+ Objects.requireNonNull(defensiveCopy[i], "stackTrace[" + i
+ "]");
}
synchronized (this) {
@@ -914,8 +913,7 @@
for (Throwable t : suppressedExceptions) {
// Enforce constraints on suppressed exceptions in
// case of corrupt or malicious stream.
- if (t == null)
- throw new NullPointerException(NULL_CAUSE_MESSAGE);
+ Objects.requireNonNull(t, NULL_CAUSE_MESSAGE);
if (t == this)
throw new
IllegalArgumentException(SELF_SUPPRESSION_MESSAGE);
suppressed.add(t);
@@ -942,8 +940,7 @@
stackTrace = null;
} else { // Verify stack trace elements are non-null.
for(StackTraceElement ste : stackTrace) {
- if (ste == null)
- throw new NullPointerException("null
StackTraceElement in serial stream. ");
+ Objects.requireNonNull(ste, "null StackTraceElement
in serial stream. ");
}
}
} else {
@@ -1034,8 +1031,7 @@
if (exception == this)
throw new
IllegalArgumentException(SELF_SUPPRESSION_MESSAGE, exception);
- if (exception == null)
- throw new NullPointerException(NULL_CAUSE_MESSAGE);
+ Objects.requireNonNull(exception, NULL_CAUSE_MESSAGE);
if (suppressedExceptions == null) // Suppressed exceptions not
recorded
return;
