Fix javadoc errors and warnings

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/FileUtils.java

@@ -60,7 +60,7 @@ public abstract class FileUtils {
 	 * Generate a SHA.1 Hash for a given file.
 	 * @param file the file to hash
 	 * @return the hash value as a String
-	 * @throws IOException
+	 * @throws IOException if the file cannot be read
 	 */
 	public static String sha1Hash(File file) throws IOException {
 		try {

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/JarWriter.java

@@ -62,8 +62,8 @@ public class JarWriter {
 	/**
 	 * Create a new {@link JarWriter} instance.
 	 * @param file the file to write
-	 * @throws IOException
-	 * @throws FileNotFoundException
+	 * @throws IOException if the file cannot be opened
+	 * @throws FileNotFoundException if the file cannot be found
 	 */
 	public JarWriter(File file) throws FileNotFoundException, IOException {
 		this(file, null);
@@ -73,8 +73,8 @@ public class JarWriter {
 	 * Create a new {@link JarWriter} instance.
 	 * @param file the file to write
 	 * @param launchScript an optional launch script to prepend to the front of the jar
-	 * @throws IOException
-	 * @throws FileNotFoundException
+	 * @throws IOException if the file cannot be opened
+	 * @throws FileNotFoundException if the file cannot be found
 	 */
 	public JarWriter(File file, LaunchScript launchScript) throws FileNotFoundException,
 			IOException {
@@ -102,7 +102,7 @@ public class JarWriter {
 	/**
 	 * Write the specified manifest.
 	 * @param manifest the manifest to write
-	 * @throws IOException
+	 * @throws IOException of the manifest cannot be written
 	 */
 	public void writeManifest(final Manifest manifest) throws IOException {
 		JarEntry entry = new JarEntry("META-INF/MANIFEST.MF");
@@ -117,7 +117,7 @@ public class JarWriter {
 	/**
 	 * Write all entries from the specified jar file.
 	 * @param jarFile the source jar file
-	 * @throws IOException
+	 * @throws IOException if the entries cannot be written
 	 */
 	public void writeEntries(JarFile jarFile) throws IOException {
 		Enumeration<JarEntry> entries = jarFile.entries();
@@ -194,7 +194,7 @@ public class JarWriter {
 
 	/**
 	 * Write the required spring-boot-loader classes to the JAR.
-	 * @throws IOException
+	 * @throws IOException if the classes cannot be written
 	 */
 	public void writeLoaderClasses() throws IOException {
 		URL loaderJar = getClass().getClassLoader().getResource(NESTED_LOADER_JAR);
@@ -211,7 +211,7 @@ public class JarWriter {
 
 	/**
 	 * Close the writer.
-	 * @throws IOException
+	 * @throws IOException if the file cannot be closed
 	 */
 	public void close() throws IOException {
 		this.jarOutput.close();

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Libraries.java

@@ -37,7 +37,7 @@ public interface Libraries {
 	/**
 	 * Iterate all relevant libraries.
 	 * @param callback a callback for each relevant library.
-	 * @throws IOException
+	 * @throws IOException if the operation fails
 	 */
 	void doWithLibraries(LibraryCallback callback) throws IOException;
 

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/LibraryCallback.java

@@ -29,7 +29,7 @@ public interface LibraryCallback {
 	/**
 	 * Callback to for a single library backed by a {@link File}.
 	 * @param library the library
-	 * @throws IOException
+	 * @throws IOException if the operation fails
 	 */
 	void library(Library library) throws IOException;
 

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/MainClassFinder.java

@@ -76,7 +76,7 @@ public abstract class MainClassFinder {
 	 * Find the main class from a given folder.
 	 * @param rootFolder the root folder to search
 	 * @return the main class or {@code null}
-	 * @throws IOException
+	 * @throws IOException if the folder cannot be read
 	 */
 	public static String findMainClass(File rootFolder) throws IOException {
 		return doWithMainClasses(rootFolder, new ClassNameCallback<String>() {
@@ -91,7 +91,7 @@ public abstract class MainClassFinder {
 	 * Find a single main class from a given folder.
 	 * @param rootFolder the root folder to search
 	 * @return the main class or {@code null}
-	 * @throws IOException
+	 * @throws IOException if the folder cannot be read
 	 */
 	public static String findSingleMainClass(File rootFolder) throws IOException {
 		MainClassesCallback callback = new MainClassesCallback();
@@ -161,7 +161,7 @@ public abstract class MainClassFinder {
 	 * @param jarFile the jar file to search
 	 * @param classesLocation the location within the jar containing classes
 	 * @return the main class or {@code null}
-	 * @throws IOException
+	 * @throws IOException if the jar file cannot be read
 	 */
 	public static String findMainClass(JarFile jarFile, String classesLocation)
 			throws IOException {
@@ -179,7 +179,7 @@ public abstract class MainClassFinder {
 	 * @param jarFile the jar file to search
 	 * @param classesLocation the location within the jar containing classes
 	 * @return the main class or {@code null}
-	 * @throws IOException
+	 * @throws IOException if the jar file cannot be read
 	 */
 	public static String findSingleMainClass(JarFile jarFile, String classesLocation)
 			throws IOException {

spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/Repackager.java

@@ -90,7 +90,7 @@ public class Repackager {
 	/**
 	 * Repackage the source file so that it can be run using '{@literal java -jar}'
 	 * @param libraries the libraries required to run the archive
-	 * @throws IOException
+	 * @throws IOException if the file cannot be repackaged
 	 */
 	public void repackage(Libraries libraries) throws IOException {
 		repackage(this.source, libraries);
@@ -101,7 +101,7 @@ public class Repackager {
 	 * {@literal java -jar}'
 	 * @param destination the destination file (may be the same as the source)
 	 * @param libraries the libraries required to run the archive
-	 * @throws IOException
+	 * @throws IOException if the file cannot be repackaged
 	 */
 	public void repackage(File destination, Libraries libraries) throws IOException {
 		repackage(destination, libraries, null);
@@ -113,7 +113,7 @@ public class Repackager {
 	 * @param destination the destination file (may be the same as the source)
 	 * @param libraries the libraries required to run the archive
 	 * @param launchScript an optional launch script prepended to the front of the jar
-	 * @throws IOException
+	 * @throws IOException if the file cannot be repackaged
 	 * @since 1.3.0
 	 */
 	public void repackage(File destination, Libraries libraries, LaunchScript launchScript)