cleanup - isEmpty

GitOrigin-RevId: 100d69abb6a423556574a72e82508fdb8f5d7fa3

java/java-runtime/src/com/intellij/rt/ant/execution/IdeaInputHandler.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.rt.ant.execution;
 
 import org.apache.tools.ant.BuildException;
@@ -26,7 +26,7 @@ public class IdeaInputHandler implements InputHandler {
     if (request instanceof MultipleChoiceInputRequest) {
       @SuppressWarnings("unchecked") 
       List<String> choices = ((MultipleChoiceInputRequest)request).getChoices();
-      if (choices != null && choices.size() > 0) {
+      if (choices != null && !choices.isEmpty()) {
         int count = choices.size();
         packet.appendLong(count);
         for (String choice : choices) {

java/java-runtime/src/com/intellij/rt/execution/testFrameworks/ForkedByModuleSplitter.java

@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.rt.execution.testFrameworks;
 
 import java.io.*;
@@ -83,7 +69,7 @@ public abstract class ForkedByModuleSplitter {
     }
 
     builder.add("-classpath");
-    if (myDynamicClasspath.length() > 0) {
+    if (!myDynamicClasspath.isEmpty()) {
       try {
         if ("ARGS_FILE".equals(myDynamicClasspath)) {
           File argFile = File.createTempFile("arg_file", null);
@@ -154,7 +140,7 @@ public abstract class ForkedByModuleSplitter {
         final String classpath = perDirReader.readLine();
         List<String> moduleOptions = new ArrayList<>();
         String modulePath = perDirReader.readLine();
-        if (modulePath != null && modulePath.length() > 0) {
+        if (modulePath != null && !modulePath.isEmpty()) {
           moduleOptions.add("-p");
           moduleOptions.add(modulePath);
         }

java/java-runtime/src/com/intellij/rt/execution/testFrameworks/ForkedSplitter.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.rt.execution.testFrameworks;
 
 import com.intellij.rt.execution.junit.RepeatCount;
@@ -30,7 +30,7 @@ public abstract class ForkedSplitter<T> extends ForkedByModuleSplitter {
       final String classpath = System.getProperty("java.class.path");
       final String modulePath = System.getProperty("jdk.module.path");
       final List<String> moduleOptions = new ArrayList<>();
-      if (modulePath != null && modulePath.length() > 0) {
+      if (modulePath != null && !modulePath.isEmpty()) {
         moduleOptions.add("-p");
         moduleOptions.add(modulePath);
       }

java/java-runtime/src/com/intellij/rt/execution/testFrameworks/ProcessBuilder.java

@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.rt.execution.testFrameworks;
 
 import java.io.File;
@@ -67,7 +53,7 @@ public class ProcessBuilder {
   //
   // If either of these becomes an issue, please refer to [util] CommandLineUtil.addToWindowsCommandLine() for a possible implementation.
   public Process createProcess() throws IOException {
-    if (myParameters.size() < 1) {
+    if (myParameters.isEmpty()) {
       throw new IllegalArgumentException("Executable name not specified");
     }
 
@@ -91,7 +77,7 @@ public class ProcessBuilder {
           while ((pos = parameter.indexOf('\"', pos)) >= 0);
           parameter = buffer.toString();
         }
-        else if (parameter.length() == 0) {
+        else if (parameter.isEmpty()) {
           parameter = "\"\"";
         }