fix try block

Issue-ID: POLICY-961

Change-Id: Ia1f388368007a4a82a57520dc6ddd99cc484a393
Signed-off-by: Krishnajinka <kris.jinka@samsung.com>

4 files changed, 10 insertions, 40 deletions

diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/PAPRestConfig.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/PAPRestConfig.java
index 1b9afe547..7e514ef24 100644
--- a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/PAPRestConfig.java
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/PAPRestConfig.java
@@ -57,9 +57,8 @@ public class PAPRestConfig extends WebMvcConfigurerAdapter {
 	@PostConstruct
 	public void init(){
 		Properties prop = new Properties();
-		InputStream input = null;
-		try {
-			input = new FileInputStream("xacml.pap.properties");
+
+		try(InputStream input = new FileInputStream("xacml.pap.properties")) {
 			// load a properties file
 			prop.load(input);
 			setDbDriver(prop.getProperty("javax.persistence.jdbc.driver"));
@@ -68,14 +67,6 @@ public class PAPRestConfig extends WebMvcConfigurerAdapter {
 			setDbPassword( CryptoUtils.decryptTxtNoExStr(prop.getProperty("javax.persistence.jdbc.password", "")));
 		}catch(Exception e){
 			LOGGER.error("Exception Occured while loading properties file"+e);
-		}finally{
-			if(input != null){
-				try {
-					input.close();
-				} catch (IOException e) {
-					LOGGER.error("Exception Occured while clsoing the stream"+e);
-				}
-			}
 		}
 	}
 	
diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/ConfigPolicy.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/ConfigPolicy.java
index 48eb784a7..b808e5882 100644
--- a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/ConfigPolicy.java
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/ConfigPolicy.java
@@ -80,24 +80,15 @@ public class ConfigPolicy extends Policy {
 	
 	// Saving the Configurations file at server location for config policy.
 	protected void saveConfigurations(String policyName) {
-	        BufferedWriter bw = null;
-		try {
-			String fileName = getConfigFile(policyName);
-			bw = new BufferedWriter(new FileWriter(CONFIG_HOME + File.separator + fileName));
+
+		String fileName = getConfigFile(policyName);
+		try(BufferedWriter bw = new BufferedWriter(new FileWriter(CONFIG_HOME + File.separator + fileName))) {
 			bw.write(configBodyData);
 			if (LOGGER.isDebugEnabled()) {
 			    LOGGER.debug("Configuration is succesfully saved");
 			}
 		} catch (IOException e) {
 			LOGGER.error("Exception Occured while writing Configuration Data"+e);
-		} finally {
-		    if(bw != null){
-                    try {
-                        bw.close();
-                    } catch (Exception e) {
-                        LOGGER.error("Exception Occured while closing the BufferedWriter"+e);
-                    }
-               }
 		}
 	}
 
diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/CreateNewMicroServiceModel.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/CreateNewMicroServiceModel.java
index 7757c2f19..0679e79d8 100644
--- a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/CreateNewMicroServiceModel.java
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/CreateNewMicroServiceModel.java
@@ -185,9 +185,8 @@ public class CreateNewMicroServiceModel {
 	    int BUFFER = 2048;
 	    File file = new File(zipFile);
 
-	    ZipFile zip = null;
-		try {
-			zip = new ZipFile("ExtractDir" + File.separator +file);
+
+		try(ZipFile zip = new ZipFile("ExtractDir" + File.separator +file)) {
 		    String newPath =  zipFile.substring(0, zipFile.length() - 4);
 		    new File(newPath).mkdir();
 		    Enumeration zipFileEntries = zip.entries();
@@ -225,14 +224,6 @@ public class CreateNewMicroServiceModel {
 		    }
 	    } catch (IOException e) {
 			logger.error("Failed to unzip model file " + zipFile + e);
-		}finally{
-			if(zip != null){
-				try {
-					zip.close();
-				} catch (Exception e) {
-					logger.error("Exception Occured while closing the zip file"+e);
-				}
-			}
 		}
 	}
 
diff --git a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/PolicyDBDao.java b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/PolicyDBDao.java
index a8449e307..60b35fb09 100644
--- a/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/PolicyDBDao.java
+++ b/ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/components/PolicyDBDao.java
@@ -1923,18 +1923,15 @@ public class PolicyDBDao {
 		
 		private String readConfigFile(String configPath){
 			String configDataString = null;
-			InputStream configContentStream = null;
-			try {
-				configContentStream = new FileInputStream(configPath);
+
+			try(InputStream configContentStream = new FileInputStream(configPath)) {
 				configDataString = IOUtils.toString(configContentStream);
 			} catch (FileNotFoundException e) {
 				logger.error("Caught FileNotFoundException on new FileInputStream("+configPath+")",e);
 				throw new IllegalArgumentException("The config file path does not exist");
 			} catch(IOException e2){
-				logger.error("Caught IOException on newIOUtils.toString("+configContentStream+")",e2);
+				logger.error("Caught IOException on newIOUtils.toString(configContentStream)",e2);
 				throw new IllegalArgumentException("The config file path cannot be read");
-			} finally {
-				IOUtils.closeQuietly(configContentStream);
 			}
 			if(configDataString == null){
 				throw new IllegalArgumentException("The config file path cannot be read");