<dependency>
  <groupId>org.web3j</groupId>
  <artifactId>base</artifactId>
  <version>4.5.7</version>
</dependency>

implementation 'org.web3j:base:4.5.7'

implementation("org.web3j:base:4.5.7")

libraryDependencies += "org.web3j" % "base" % "4.5.7"

@Grapes(
  @Grab(group='org.web3j', module='base', version='4.5.7')
)

<dependency org="org.web3j" name="base" rev="4.5.7" />

[org.web3j/base "4.5.7"]

'org.web3j:base:jar:4.5.7'