Fix lib

build.gradle

@@ -1,8 +1,14 @@
 apply plugin: 'java-library'
 
+repositories {
+    mavenCentral()
+}
+
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation files('libs\\json-simple-1.1.jar')
+
+    // https://mvnrepository.com/artifact/com.googlecode.json-simple/json-simple
+    implementation group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.1'
 }
 
 sourceCompatibility = "1.7"