Cleanup use of Guava library

[yangtools.git] / yang / yang-data-jaxen / src / main / java / org / opendaylight / yangtools / yang / data / jaxen / ExprWalker.java

diff --git a/yang/yang-data-jaxen/src/main/java/org/opendaylight/yangtools/yang/data/jaxen/ExprWalker.java b/yang/yang-data-jaxen/src/main/java/org/opendaylight/yangtools/yang/data/jaxen/ExprWalker.java
index 6e926f5665b32b05964c40ae78d10bf1e23630fe..87bd1ec6c8259513803ecfed5816d882ac7495ad 100644 (file)
--- a/yang/yang-data-jaxen/src/main/java/org/opendaylight/yangtools/yang/data/jaxen/ExprWalker.java
+++ b/yang/yang-data-jaxen/src/main/java/org/opendaylight/yangtools/yang/data/jaxen/ExprWalker.java
@@ -7,7 +7,8 @@
  */
 package org.opendaylight.yangtools.yang.data.jaxen;
 
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+
 import java.util.Optional;
 import org.jaxen.expr.AllNodeStep;
 import org.jaxen.expr.BinaryExpr;
@@ -29,7 +30,7 @@ final class ExprWalker {
     private final ExprListener listener;
 
     ExprWalker(final ExprListener listener) {
-        this.listener = Preconditions.checkNotNull(listener);
+        this.listener = requireNonNull(listener);
     }
 
     public void walk(final Expr expr) {