refact: fixed warnings

src/main/java/neqsim/physicalProperties/util/parameterFitting/pureComponentParameterFitting/pureCompViscosity/linearLiquidModel/TestViscosityFit.java

@@ -29,7 +29,6 @@ public class TestViscosityFit {
      *
      * @param args an array of {@link java.lang.String} objects
      */
-    @SuppressWarnings("unused")
     public static void main(String[] args) {
         LevenbergMarquardt optim = new LevenbergMarquardt();
         ArrayList<SampleValue> sampleList = new ArrayList<SampleValue>();

src/main/java/neqsim/processSimulation/processEquipment/splitter/ComponentSplitter.java

@@ -81,7 +81,7 @@ public StreamInterface getSplitStream(int i) {
   public void run() {
     for (int i = 0; i < 2; i++) {
       thermoSystem = inletStream.getThermoSystem().clone();
-      thermoSystem.removeMoles();
+      thermoSystem.setEmptyFluid();
       if (i == 0) {
         for (int k = 0; k < thermoSystem.getNumberOfComponents(); k++) {
           thermoSystem.addComponent(k,

src/test/java/neqsim/physicalProperties/util/examples/TestSurfaceTension2.java

@@ -15,11 +15,12 @@ public class TestSurfaceTension2 {
     // John debug
 
     /**
-     * <p>main.</p>
+     * <p>
+     * main.
+     * </p>
      *
      * @param args an array of {@link java.lang.String} objects
      */
-    @SuppressWarnings("unused")
     public static void main(String args[]) {
         int gtmethod = 1; // 2; John changed
 

src/test/java/neqsim/processSimulation/measurementDevice/pHProbeTest.java

@@ -1,12 +1,11 @@
 package neqsim.processSimulation.measurementDevice;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import neqsim.processSimulation.processEquipment.stream.Stream;
 import neqsim.thermo.system.SystemInterface;
 import neqsim.thermo.system.SystemSrkCPAstatoil;
-import neqsim.thermo.system.SystemSrkEos;
 
 class pHProbeTest {
 

src/test/java/neqsim/processSimulation/processEquipment/splitter/ComponentSplitterTest.java

@@ -1,7 +1,6 @@
 package neqsim.processSimulation.processEquipment.splitter;
 
-import static org.junit.jupiter.api.Assertions.*;
-import org.junit.jupiter.api.BeforeAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import neqsim.processSimulation.processEquipment.stream.Stream;
@@ -10,7 +9,6 @@
 import neqsim.thermo.system.SystemSrkEos;
 
 class ComponentSplitterTest {
-
   static neqsim.thermo.system.SystemInterface testSystem = null;
   double pressure_inlet = 85.0;
   double temperature_inlet = 35.0;

src/test/java/neqsim/thermodynamicOperations/flashOps/TPFlashTest.java

@@ -3,11 +3,9 @@
  */
 package neqsim.thermodynamicOperations.flashOps;
 
-import static org.junit.jupiter.api.Assertions.*;
-
+import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
-
 import neqsim.thermodynamicOperations.ThermodynamicOperations;
 
 /**
@@ -89,5 +87,4 @@ void testRun4() {
     double enthalpy = testSystem.getEnthalpy();
     assertEquals(-936973.1969586421, testSystem.getEnthalpy(), 1e-2);
   }
-
 }