client java application using gateway api in java sdk (#572)

* Added for client java application using gateway api in java sdk

Signed-off-by: deeptiraom <41100100+deeptiraom@users.noreply.github.com>

* removed eclipse plugin for gradle

Signed-off-by: deeptiraom <41100100+deeptiraom@users.noreply.github.com>

asset-transfer-basic/application-gateway-java/build.gradle

@@ -0,0 +1,43 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java project to get you started.
+ * For more details take a look at the Java Quickstart chapter in the Gradle
+ * User Manual available at https://docs.gradle.org/6.5/userguide/tutorial_java_projects.html
+ */
+plugins {
+    // Apply the java plugin to add support for Java
+    id 'java'
+    // Apply the application plugin to add support for building a CLI application.
+    id 'application'
+    
+}
+ext {
+   javaMainClass = "application.java.App"
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    // This dependency is used by the application.
+    implementation 'org.hyperledger.fabric:fabric-gateway:1.0.0'
+    implementation 'io.grpc:grpc-netty-shaded:1.42.0'
+    implementation 'com.google.code.gson:gson:2.8.9'
+    
+}
+
+application {
+    // Define the main class for the application.
+    mainClassName = 'application.java.App'
+}
+
+// task for running the app after building dependencies
+task runApp(type: Exec) {
+    dependsOn build
+    group = "Execution"
+    description = "Run the main class with ExecTask"
+    commandLine "java", "-classpath", sourceSets.main.runtimeClasspath.getAsPath(), javaMainClass
+}
+

asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

asset-transfer-basic/application-gateway-java/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# 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
+#
+#      https://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.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

asset-transfer-basic/application-gateway-java/gradlew.bat

@@ -0,0 +1,104 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

asset-transfer-basic/application-gateway-java/settings.gradle

@@ -0,0 +1,10 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ *
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user manual at https://docs.gradle.org/6.5/userguide/multi_project_builds.html
+ */
+
+rootProject.name = 'application-java'

asset-transfer-basic/application-gateway-java/src/main/java/application/java/App.java

@@ -0,0 +1,286 @@
+ 
+/*
+ * Copyright IBM Corp. All Rights Reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// Running TestApp: 
+// gradle runApp 
+
+package application.java;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.Reader;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.InvalidKeyException;
+import java.security.PrivateKey;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.time.Instant;
+import java.util.concurrent.TimeUnit;
+
+import org.hyperledger.fabric.client.CallOption;
+import org.hyperledger.fabric.client.CommitException;
+import org.hyperledger.fabric.client.CommitStatusException;
+import org.hyperledger.fabric.client.Contract;
+import org.hyperledger.fabric.client.EndorseException;
+import org.hyperledger.fabric.client.Gateway;
+import org.hyperledger.fabric.client.GatewayException;
+import org.hyperledger.fabric.client.Network;
+import org.hyperledger.fabric.client.SubmitException;
+import org.hyperledger.fabric.client.SubmittedTransaction;
+import org.hyperledger.fabric.client.Status;
+import org.hyperledger.fabric.client.identity.Identities;
+import org.hyperledger.fabric.client.identity.Identity;
+import org.hyperledger.fabric.client.identity.Signer;
+import org.hyperledger.fabric.client.identity.Signers;
+import org.hyperledger.fabric.client.identity.X509Identity;
+import org.hyperledger.fabric.protos.gateway.ErrorDetail;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import io.grpc.ManagedChannel;
+
+import io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts;
+import io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder;
+
+public class App {
+
+	private static final String mspID = "Org1MSP";
+	private static final String channelName = "mychannel";
+	private static final String chaincodeName = "basic";
+
+	public static String assetId = "asset" + Instant.now().toEpochMilli();
+
+	// Path to crypto materials.
+	private static final Path cryptoPath = Paths.get("..", "..", "test-network", "organizations", "peerOrganizations",
+			"org1.example.com");
+	// Path to user certificate.
+	private static final Path certPath = cryptoPath
+			.resolve(Paths.get("users", "User1@org1.example.com", "msp", "signcerts", "cert.pem"));
+	// Path to user private key directory.
+	private static final Path keyPath = cryptoPath
+			.resolve(Paths.get("users", "User1@org1.example.com", "msp", "keystore"));
+	// Path to peer tls certificate.
+	private static final Path tlsCertPath = cryptoPath
+			.resolve(Paths.get("peers", "peer0.org1.example.com", "tls", "ca.crt"));
+
+	// Gateway peer end point.
+	public static String peerEndpoint = "localhost:7051";
+	public static String overrideAuth = "peer0.org1.example.com";
+
+	public static void main(String[] args)
+			throws Exception {
+
+		// The gRPC client connection should be shared by all Gateway connections to
+		// this endpoint.
+		ManagedChannel channel = newGrpcConnection();
+
+		Gateway.Builder builder = Gateway.newInstance().identity(newIdentity()).signer(newSigner()).connection(channel)
+				// Default timeouts for different gRPC calls
+				.evaluateOptions(CallOption.deadlineAfter(5, TimeUnit.SECONDS))
+				.endorseOptions(CallOption.deadlineAfter(15, TimeUnit.SECONDS))
+				.submitOptions(CallOption.deadlineAfter(5, TimeUnit.SECONDS))
+				.commitStatusOptions(CallOption.deadlineAfter(1, TimeUnit.MINUTES));
+
+		try (Gateway gateway = builder.connect()) {
+
+			// Get a network instance representing the channel where the smart contract is
+			// deployed.
+			Network network = gateway.getNetwork(channelName);
+
+			// Get the smart contract from the network.
+			Contract contract = network.getContract(chaincodeName);
+
+			// Initialize a set of asset data on the ledger using the chaincode 'InitLedger'
+			// function.
+			initLedger(contract);
+
+			// Return all the current assets on the ledger.
+			getAllAssets(contract);
+
+			// Create a new asset on the ledger.
+			createAsset(contract);
+
+			// Update an existing asset asynchronously.
+			transferAssetAsync(contract);
+
+			// Get the asset details by assetID.
+			readAssetById(contract);
+
+			// Update an asset which does not exist.
+			updateNonExistentAsset(contract);
+
+		} finally {
+			channel.shutdownNow().awaitTermination(5, TimeUnit.SECONDS);
+
+		}
+	}
+	
+	private static ManagedChannel newGrpcConnection() throws IOException, CertificateException {
+		Reader tlsCertReader = Files.newBufferedReader(tlsCertPath);
+		X509Certificate tlsCert = Identities.readX509Certificate(tlsCertReader);
+
+		return NettyChannelBuilder.forTarget(peerEndpoint)
+				.sslContext(GrpcSslContexts.forClient().trustManager(tlsCert).build()).overrideAuthority(overrideAuth)
+				.build();
+	}
+
+	private static Identity newIdentity() throws IOException, CertificateException {
+		Reader certReader = Files.newBufferedReader(certPath);
+		X509Certificate certificate = Identities.readX509Certificate(certReader);
+
+		return new X509Identity(mspID, certificate);
+	}
+
+	private static Signer newSigner() throws IOException, InvalidKeyException {
+		File dir = new File(keyPath.toString());
+		File[] listOfFiles = dir.listFiles();
+		Path path = Paths.get(listOfFiles[0].getPath());
+		Reader keyReader = Files.newBufferedReader(path);
+		PrivateKey privateKey = Identities.readPrivateKey(keyReader);
+
+		return Signers.newPrivateKeySigner(privateKey);
+	}
+
+	private static final Gson gson = new GsonBuilder().setPrettyPrinting().create();
+
+	private static String prettyJson(byte[] json) {
+		return prettyJson(new String(json, StandardCharsets.UTF_8));
+	}
+
+	private static String prettyJson(String json) {
+		JsonElement parsedJson = JsonParser.parseString(json);
+		return gson.toJson(parsedJson);
+	}
+	
+	/**
+	 * This type of transaction would typically only be run once by an application
+	 * the first time it was started after its initial deployment. A new version of
+	 * the chaincode deployed later would likely not need to run an "init" function.
+	 */
+	private static void initLedger(Contract contract) throws GatewayException, CommitException {
+
+		System.out.println(
+				"\n" + "--> Submit Transaction: InitLedger, function creates the initial set of assets on the ledger");
+
+		contract.submitTransaction("InitLedger");
+
+		System.out.println("*** Transaction committed successfully");
+
+	}
+
+	/**
+	 * Evaluate a transaction to query ledger state.
+	 */
+	private static void getAllAssets(Contract contract) throws GatewayException {
+
+		System.out.println(
+				"\n" + "--> Evaluate Transaction: GetAllAssets, function returns all the current assets on the ledger");
+		
+		byte[] result = contract.evaluateTransaction("GetAllAssets");
+		
+		System.out.println("*** Result: " + prettyJson(result));
+
+	}
+
+	/**
+	 * Submit a transaction synchronously, blocking until it has been committed to
+	 * the ledger.
+	 */
+	private static void createAsset(Contract contract) throws GatewayException, CommitException {
+
+		System.out.println("\n"
+				+ "--> Submit Transaction: CreateAsset, creates new asset with ID, Color, Size, Owner and AppraisedValue arguments");
+
+		contract.submitTransaction("CreateAsset", assetId, "yellow", "5", "Tom", "1300");
+
+		System.out.println("*** Transaction committed successfully");
+		
+	}
+
+	/**
+	 * Submit transaction asynchronously, allowing the application to process the
+	 * smart contract response (e.g. update a UI) while waiting for the commit
+	 * notification.
+	 */
+	private static void transferAssetAsync(Contract contract) throws GatewayException {
+
+		System.out.println("\n" + "--> Async Submit Transaction: TransferAsset, updates existing asset owner");
+		
+		SubmittedTransaction commit = contract.newProposal("TransferAsset")
+				.addArguments(assetId, "Saptha")
+				.build()
+				.endorse()
+				.submitAsync();
+
+		byte[] result = commit.getResult();
+		String oldOwner = new String(result, StandardCharsets.UTF_8);
+
+		System.out.println(
+				"*** Successfully submitted transaction to transfer ownership from " + oldOwner + " to Saptha");
+		System.out.println("*** Waiting for transaction commit");
+		
+		Status status = commit.getStatus();
+		if (!status.isSuccessful()) {
+			throw new RuntimeException("Transaction " + status.getTransactionId() + " failed to commit with status code "
+					+ status.getCode());
+
+		}
+		
+		System.out.println("*** Transaction committed successfully");
+
+	}
+
+	private static void readAssetById(Contract contract) throws GatewayException {
+
+		System.out.println("\n" + "--> Evaluate Transaction: ReadAsset, function returns asset attributes");
+		
+		byte[] evaluateResult = contract.evaluateTransaction("ReadAsset", assetId);
+		
+		System.out.println("*** Result:" + prettyJson(evaluateResult));
+	}
+
+	/**
+	 * submitTransaction() will throw an error containing details of any error
+	 * responses from the smart contract.
+	 */
+	private static void updateNonExistentAsset(Contract contract) {
+
+		try {
+			System.out.println("\n"
+					+ "--> Submit Transaction: UpdateAsset asset70, asset70 does not exist and should return an error");
+			
+			contract.submitTransaction("UpdateAsset", "asset70", "blue", "5", "Tomoko", "300");
+			
+			System.out.println("******** FAILED to return an error");
+
+		} catch (EndorseException | SubmitException | CommitStatusException e) {
+			System.out.println("*** Successfully caught the error: ");
+			
+			e.printStackTrace(System.out);
+			if (!e.getDetails().isEmpty()) {
+				System.out.println("\n" + "Error Details: ");
+				for (ErrorDetail detail : e.getDetails()) {
+					System.out.println("address: " + detail.getAddress() + ", mspId: " + detail.getMspId()
+							+ ", message: " + detail.getMessage());
+				}
+			}
+			
+			System.out.println("Transaction ID: " + e.getTransactionId());
+			
+		} catch (CommitException e) {
+			System.out.println("*** Successfully caught the error: " + e);
+			e.printStackTrace(System.out);
+			System.out.println("Transaction ID: " + e.getTransactionId() + " status code: " + e.getCode());
+		}
+	}
+
+}

ci/scripts/run-test-network-basic.sh

@@ -41,6 +41,15 @@ gradle run
 popd
 stopNetwork
 
+# Run Java application using gateway
+createNetwork
+print "Initializing Java application"
+pushd ../asset-transfer-basic/application-gateway-java
+print "Executing Gradle Run"
+gradle run
+popd
+stopNetwork
+
 # Run Javascript application
 createNetwork
 print "Initializing Javascript application"