Summary

Add throws clauses to the specification of unsigned divide and remainder methods for a zero divisor.

Problem

While the divideUnsigned and remainderUnsigned methods for int and long have been implemented to throw ArithmeticException on a zero divsior, that behavior is not specified in a throws clause.

Solution

Add the appropriate throws clause to the affected methods.

Specification

diff --git a/src/java.base/share/classes/java/lang/Integer.java b/src/java.base/share/classes/java/lang/Integer.java
index a9da1c32490..85ca80735f8 100644
--- a/src/java.base/share/classes/java/lang/Integer.java
+++ b/src/java.base/share/classes/java/lang/Integer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1994, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1448,6 +1448,7 @@ public static long toUnsignedLong(int x) {
      * @param divisor the value doing the dividing
      * @return the unsigned quotient of the first argument divided by
      * the second argument
+     * @throws ArithmeticException if the divisor is zero
      * @see #remainderUnsigned
      * @since 1.8
      */
@@ -1466,6 +1467,7 @@ public static int divideUnsigned(int dividend, int divisor) {
      * @param divisor the value doing the dividing
      * @return the unsigned remainder of the first argument divided by
      * the second argument
+     * @throws ArithmeticException if the divisor is zero
      * @see #divideUnsigned
      * @since 1.8
      */
diff --git a/src/java.base/share/classes/java/lang/Long.java b/src/java.base/share/classes/java/lang/Long.java
index c5cd9650f2d..5fa1b8fc2ea 100644
--- a/src/java.base/share/classes/java/lang/Long.java
+++ b/src/java.base/share/classes/java/lang/Long.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1994, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1411,6 +1411,7 @@ public static int compareUnsigned(long x, long y) {
      * @param divisor the value doing the dividing
      * @return the unsigned quotient of the first argument divided by
      * the second argument
+     * @throws ArithmeticException if the divisor is zero
      * @see #remainderUnsigned
      * @since 1.8
      */
@@ -1434,6 +1435,7 @@ public static long divideUnsigned(long dividend, long divisor) {
      * @param divisor the value doing the dividing
      * @return the unsigned remainder of the first argument divided by
      * the second argument
+     * @throws ArithmeticException if the divisor is zero
      * @see #divideUnsigned
      * @since 1.8
      */