Welcome to the Java 101 study guide. This guide complements " Packages Organize Classes and Interfaces." It provides a glossary of terms specific to that article, tips and cautions, new homework ...

java.lang: A collection of language-related classes, such as Object and String, organized in the java package’s lang subpackage; java.lang.ref: A collection of reference-related language classes ...

Found in the java.util package, Java’s Scanner class can read input from the command line and return it as a String, BigDecimal or any one of Java’s eight primitive types. To use the Java Scanner ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...