diff --git a/__tests__/installer.test.ts b/__tests__/installer.test.ts
index c9cf24a0..4e891e90 100644
--- a/__tests__/installer.test.ts
+++ b/__tests__/installer.test.ts
@@ -51,7 +51,7 @@ describe('installer tests', () => {
     }
   }, 100000);
 
-  it('Acquires version of Java if no matching version is installed', async () => {
+  it('Installs version of Java from jdkFile if no matching version is installed', async () => {
     await installer.getJava('12', 'x64', javaFilePath);
     const JavaDir = path.join(toolDir, 'Java', '12.0.0', 'x64');
 
@@ -69,6 +69,24 @@ describe('installer tests', () => {
     expect(thrown).toBe(true);
   });
 
+  it('Downloads java if no file given', async () => {
+    await installer.getJava('8.0.102', 'x64', '');
+    const JavaDir = path.join(toolDir, 'Java', '8.0.102', 'x64');
+
+    expect(fs.existsSync(`${JavaDir}.complete`)).toBe(true);
+    expect(fs.existsSync(path.join(JavaDir, 'bin'))).toBe(true);
+  }, 100000);
+
+  it('Throws if invalid directory to jdk', async () => {
+    let thrown = false;
+    try {
+      await installer.getJava('1000', 'x64', 'bad path');
+    } catch {
+      thrown = true;
+    }
+    expect(thrown).toBe(true);
+  });
+
   it('Uses version of Java installed in cache', async () => {
     const JavaDir: string = path.join(toolDir, 'Java', '250.0.0', 'x64');
     await io.mkdirP(JavaDir);
diff --git a/lib/installer.js b/lib/installer.js
index 163f5d8e..14bfd136 100644
--- a/lib/installer.js
+++ b/lib/installer.js
@@ -60,7 +60,7 @@ function getJava(version, arch, jdkFile) {
             let tempDir = path.join(tempDirectory, 'temp_' + Math.floor(Math.random() * 2000000000));
             const jdkDir = yield unzipJavaDownload(jdkFile, compressedFileExtension, tempDir);
             core.debug(`jdk extracted to ${jdkDir}`);
-            toolPath = yield tc.cacheDir(jdkDir, 'Java', `${version}.0.0`, arch);
+            toolPath = yield tc.cacheDir(jdkDir, 'Java', normalizeVersion(version), arch);
         }
         let extendedJavaHome = 'JAVA_HOME_' + version + '_' + arch;
         core.exportVariable('JAVA_HOME', toolPath);
@@ -69,6 +69,13 @@ function getJava(version, arch, jdkFile) {
     });
 }
 exports.getJava = getJava;
+function normalizeVersion(version) {
+    const versionArray = version.split('.');
+    const major = versionArray[0];
+    const minor = versionArray.length > 1 ? versionArray[1] : '0';
+    const patch = versionArray.length > 2 ? versionArray[2] : '0';
+    return `${major}.${minor}.${patch}`;
+}
 function getFileEnding(file) {
     let fileEnding = '';
     if (file.endsWith('.tar')) {
diff --git a/src/installer.ts b/src/installer.ts
index f182f41e..cb0ee0e1 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -54,7 +54,12 @@ export async function getJava(
       tempDir
     );
     core.debug(`jdk extracted to ${jdkDir}`);
-    toolPath = await tc.cacheDir(jdkDir, 'Java', `${version}.0.0`, arch);
+    toolPath = await tc.cacheDir(
+      jdkDir,
+      'Java',
+      normalizeVersion(version),
+      arch
+    );
   }
 
   let extendedJavaHome = 'JAVA_HOME_' + version + '_' + arch;
@@ -63,6 +68,14 @@ export async function getJava(
   core.addPath(path.join(toolPath, 'bin'));
 }
 
+function normalizeVersion(version: string) {
+  const versionArray = version.split('.');
+  const major = versionArray[0];
+  const minor = versionArray.length > 1 ? versionArray[1] : '0';
+  const patch = versionArray.length > 2 ? versionArray[2] : '0';
+  return `${major}.${minor}.${patch}`;
+}
+
 function getFileEnding(file: string): string {
   let fileEnding = '';