diff --git a/pom.xml b/pom.xml
index 91c8b0a3a..f01ff7452 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,6 @@
             <version>[7.0.13,)</version>
             <scope>test</scope>
         </dependency>
-
         <dependency>
             <groupId>commons-io</groupId>
             <artifactId>commons-io</artifactId>
@@ -72,7 +71,7 @@
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
-            <version>[2.2.224,)</version>
+            <version>[2.3.232,)</version>
             <scope>test</scope>
         </dependency>
 
@@ -205,7 +204,6 @@
             <plugin>
                 <groupId>org.javacc.plugin</groupId>
                 <artifactId>javacc-maven-plugin</artifactId>
-                <version>3.0.3</version>
                 <executions>
                     <execution>
                         <id>javacc</id>
diff --git a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
index d11fe5edc..b980cdf24 100644
--- a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
+++ b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
@@ -1192,22 +1192,26 @@ ExplainStatement Explain():
     Select select;
     Table table;
     List<ExplainStatement.Option> options;
+    ExplainStatement es;
 }
 {
     ( tk=<K_EXPLAIN> | tk = <K_SUMMARIZE> )
     (
         LOOKAHEAD(3)(
-            options=ExplainStatementOptions()
+            options= ExplainStatementOptions()
             select = Select( )
             {
-                return new ExplainStatement(tk.image, select, options);
+                es = new ExplainStatement(tk.image, select, options);
             }
         )
         |
         (
-           table=Table( ) {  return new ExplainStatement(tk.image, table);  }
+           table=Table( ) {  es = new ExplainStatement(tk.image, table);  }
         )
     )
+    {
+        return es;
+    }
 }
 
 /**
diff --git a/src/test/java/net/sf/jsqlparser/statement/ExplainStatementTest.java b/src/test/java/net/sf/jsqlparser/statement/ExplainStatementTest.java
index 87799f5de..2a27bada7 100644
--- a/src/test/java/net/sf/jsqlparser/statement/ExplainStatementTest.java
+++ b/src/test/java/net/sf/jsqlparser/statement/ExplainStatementTest.java
@@ -1,3 +1,12 @@
+/*-
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2024 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
 package net.sf.jsqlparser.statement;
 
 import net.sf.jsqlparser.JSQLParserException;
diff --git a/src/test/java/net/sf/jsqlparser/statement/select/NestedBracketsPerformanceTest.java b/src/test/java/net/sf/jsqlparser/statement/select/NestedBracketsPerformanceTest.java
index 240e10bf9..c70d29c73 100644
--- a/src/test/java/net/sf/jsqlparser/statement/select/NestedBracketsPerformanceTest.java
+++ b/src/test/java/net/sf/jsqlparser/statement/select/NestedBracketsPerformanceTest.java
@@ -135,10 +135,10 @@ public void testRecursiveBracketExpressionIssue1019() {
     // maxDepth = 10 collides with the Parser Timeout = 6 seconds
     // @todo: implement methods to set the Parser Timeout explicitly and on demand
     @Test
-    @Timeout(20000)
+    @Timeout(2000)
     public void testRecursiveBracketExpressionIssue1019_2() throws JSQLParserException {
         // Temporally set the maxDepth to be 6, was 8 before this
-        doIncreaseOfParseTimeTesting("IF(1=1, $1, 2)", "1", 6);
+        doIncreaseOfParseTimeTesting("IF(1=1, $1, 2)", "1", 8);
     }
 
     @Test
@@ -165,9 +165,9 @@ public void testIssue1013_3() throws JSQLParserException {
     @Test
     @Timeout(2000)
     public void testIssue1013_4() throws JSQLParserException {
-        String s = "tblA";
+        StringBuilder s = new StringBuilder("tblA");
         for (int i = 1; i < 100; i++) {
-            s = "(" + s + ")";
+            s = new StringBuilder("(" + s + ")");
         }
         String sql = "SELECT * FROM " + s;
         LOG.info("testing " + sql);
@@ -182,8 +182,7 @@ public void testIssue1013_4() throws JSQLParserException {
     @Test
     @Timeout(2000)
     public void testIncreaseOfParseTime() throws JSQLParserException {
-        // Temporally set the maxDepth to be 6, was 50 before this
-        doIncreaseOfParseTimeTesting("concat($1,'B')", "'A'", 6);
+        doIncreaseOfParseTimeTesting("concat($1,'B')", "'A'", 50);
     }
 
     private void doIncreaseOfParseTimeTesting(String template, String finalExpression, int maxDepth)
@@ -194,7 +193,7 @@ private void doIncreaseOfParseTimeTesting(String template, String finalExpressio
             String sql = "SELECT " + buildRecursiveBracketExpression(template, finalExpression, i)
                     + " FROM mytbl";
             long startTime = System.currentTimeMillis();
-            assertSqlCanBeParsedAndDeparsed(sql, true, parser -> parser.withTimeOut(60000));
+            assertSqlCanBeParsedAndDeparsed(sql, true, parser -> parser.withTimeOut(12000));
             long durationTime = System.currentTimeMillis() - startTime;
 
             if (i > 0) {