Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName ()' on a null object reference #104 ...

The Long.parseLong () method is not deprecated like the Long constructor. Java String to long example The following String to long example program converts the text String 90210 to a long, and then ...

Thus, in order to pass a char to a java method, use a string containing just one character number values will be converted to int, long, double, float, java.lang.Integer, java.lang.Long, ...

Benefits of the Java String printf method The Java String printf method can be confusing at first, but it greatly simplifies how you format complex Strings. This is especially true when creating ...

Method and variable handles vs. Java reflection To truly understand MethodHandles and VarHandles —what they do and why they are useful—it’s helpful to know a few things about reflection in Java.

IntListVer2 Added default add method, equals method, and toString methods. Includes versions of toString using String concatenation and StringBuffer to illustarte performance differences.