Avoid potential integer overflow in seconds->millis transformation

Closes gh-25613

Author: jhoeller

spring-context/src/main/java/org/springframework/context/support/AbstractResourceBasedMessageSource.java

@@ -218,7 +218,7 @@ protected Locale getDefaultLocale() {
 	 * a non-classpath location.
 	 */
 	public void setCacheSeconds(int cacheSeconds) {
-		this.cacheMillis = (cacheSeconds * 1000);
+		this.cacheMillis = cacheSeconds * 1000L;
 	}
 
 	/**

spring-context/src/main/java/org/springframework/scheduling/concurrent/ExecutorConfigurationSupport.java

@@ -146,7 +146,7 @@ public void setWaitForTasksToCompleteOnShutdown(boolean waitForJobsToCompleteOnS
 	 * @see java.util.concurrent.ExecutorService#awaitTermination
 	 */
 	public void setAwaitTerminationSeconds(int awaitTerminationSeconds) {
-		this.awaitTerminationMillis = awaitTerminationSeconds * 1000;
+		this.awaitTerminationMillis = awaitTerminationSeconds * 1000L;
 	}
 
 	/**