Replace string concatenations with String.format (eugenp#3201)

ocheja · pivovarit · commit c0a730a3ac5f · 2017-12-07T10:24:49.000+01:00
* Define beans for handling different message types in a lean chat app

* Add class based spring beans configuration

* Define spring configuration in XML for constructor based bean injection

* Refactor package structure to separate constructor based bean injection code set from setter based bean injection code set

* Define configuration and classes specific to setter-based bean injection.

* Implement tests for constructor-based and setter-based bean injections

* develop codes for explaining type erasure

* Write unit tests for type erasure examples

* Remove evaluation article code

* Modify type erasure examples and unit tests

* Modify type erasure examples and unit tests

* Add expected exception in TypeErasureUnitTest

* Correct grammar in class name

* Implement File Manager app to demonstrate Polymorphism. Develop unit tests for Polymorphism article code

* Add examples for static polymorphism

* Change sysout statments to slf4j log info statements

* Add assertions and expected errors check on Test

* Add assertions and expected errors check on Test

* Correct compile time error of symbol not found

* Removed commented out non-compiling test.

* Replace string concatenations with String.format

* Replace string concatenations with String.format
diff --git a/core-java/src/main/java/com/baeldung/polymorphism/GenericFile.java b/core-java/src/main/java/com/baeldung/polymorphism/GenericFile.java
@@ -54,7 +54,7 @@ public void setContent(byte[] content) {
     }
 
     public String getFileInfo() {
-        return "File Name: " + this.getName() + "\n" + "Extension: " + this.getExtension() + "\n" + "Date Created: " + this.getDateCreated() + "\n" + "Version: " + this.getVersion() + "\n";
+        return String.format("File Name: %s\n" + " Extension: %s\n" + " Date Created: %s\n" + " Version: %s\n", this.getName(), this.getExtension(), this.getDateCreated(), this.getVersion());
     }
 
     public Object read() {
diff --git a/core-java/src/main/java/com/baeldung/polymorphism/ImageFile.java b/core-java/src/main/java/com/baeldung/polymorphism/ImageFile.java
@@ -30,7 +30,7 @@ public void setWidth(int width) {
     }
 
     public String getFileInfo() {
-        return super.getFileInfo() + "Height: " + this.getHeight() + "\n" + "Width: " + this.getWidth();
+        return String.format(" %s Height: %d\n Width: %d", super.getFileInfo(), this.getHeight(), this.getWidth());
     }
 
     public String read() {
diff --git a/core-java/src/main/java/com/baeldung/polymorphism/TextFile.java b/core-java/src/main/java/com/baeldung/polymorphism/TextFile.java
@@ -21,7 +21,7 @@ public void setWordCount(int wordCount) {
     }
 
     public String getFileInfo() {
-        return super.getFileInfo() + "Word Count: " + wordCount;
+        return String.format(" %s Word Count: %d", super.getFileInfo(), wordCount);
     }
 
     public String read() {
diff --git a/core-java/src/test/java/com/baeldung/polymorphism/PolymorphismUnitTest.java b/core-java/src/test/java/com/baeldung/polymorphism/PolymorphismUnitTest.java
@@ -3,8 +3,6 @@
 import static org.junit.Assert.*;
 
 import java.awt.image.BufferedImage;
-
-import org.junit.Ignore;
 import org.junit.Test;
 
 public class PolymorphismUnitTest {

Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,7 @@ public void setContent(byte[] content) {`
`54`	`54`	`}`
`55`	`55`
`56`	`56`	`public String getFileInfo() {`
`57`		`- return "File Name: " + this.getName() + "\n" + "Extension: " + this.getExtension() + "\n" + "Date Created: " + this.getDateCreated() + "\n" + "Version: " + this.getVersion() + "\n";`
	`57`	`+ return String.format("File Name: %s\n" + " Extension: %s\n" + " Date Created: %s\n" + " Version: %s\n", this.getName(), this.getExtension(), this.getDateCreated(), this.getVersion());`
`58`	`58`	`}`
`59`	`59`
`60`	`60`	`public Object read() {`
Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@ public void setWidth(int width) {`
`30`	`30`	`}`
`31`	`31`
`32`	`32`	`public String getFileInfo() {`
`33`		`- return super.getFileInfo() + "Height: " + this.getHeight() + "\n" + "Width: " + this.getWidth();`
	`33`	`+ return String.format(" %s Height: %d\n Width: %d", super.getFileInfo(), this.getHeight(), this.getWidth());`
`34`	`34`	`}`
`35`	`35`
`36`	`36`	`public String read() {`
Original file line number	Diff line number	Diff line change
`@@ -21,7 +21,7 @@ public void setWordCount(int wordCount) {`
`21`	`21`	`}`
`22`	`22`
`23`	`23`	`public String getFileInfo() {`
`24`		`- return super.getFileInfo() + "Word Count: " + wordCount;`
	`24`	`+ return String.format(" %s Word Count: %d", super.getFileInfo(), wordCount);`
`25`	`25`	`}`
`26`	`26`
`27`	`27`	`public String read() {`