The function declares two types. The first is the type of the input to the function and the second is the type of the result of the function. The variable following the equals character is the input variable. The result of the expression after->is the function return value. Note that we...
Java SE 8 introduces a new class called java.util.Optional<T>that is inspired from the ideas of Haskell and Scala. It is a class that encapsulates an optional value, as illustrated in Listing 2 below and in Figure 1. You can viewOptionalas a single-value container that either contains a...
(Boolean.TRUE.equals(veggie)) { tip = firstName + " " + lastName + " is a vegetarian"; } else { tip = firstName + " " + lastName + " is not a vegetarian"; } } else { //another column //You can omit this part if you know you don't //have any renderers that supply ...
(prop.equals(JOptionPane.VALUE_PROPERTY))) { //If you were going to check something //before closing the window, you'd do //it here. dialog.setVisible(false); } } }); dialog.pack(); dialog.setVisible(true); int value = ((Integer)optionPane.getValue()).intValue(); if (value ==...
IF callerEquals("WrappedConnection.close", true, 5) # Change the frame count (last parameter below) to refine the size of the stack trace - e.g. change 20 to 6 DO traceStack("CONNECTION TRACE - closeConnection(" + $3 + "(pooledId=" + Integer.toHexString(System.identityHashCode($3)...
means that num is an int, Scanner scan = new Scanner(System.in); means that scan is a Scanner. It's pretty simple. Don't worry too much about what it equals, it just means that it will be getting our input. Notice how it looks awfully similar to System.out but with an "in" in...
SELECT1FROMdualWHEREa=b/*produces the following ASTSQL Text└─Statements: statement.select.PlainSelect├─selectItems: statement.select.SelectItem│ └─LongValue: 1├─Table: dual└─where: expression.operators.relational.EqualsTo├─Column: a└─Column: b*/ ...
The classBigComplexrepresents complex numbers in the form(a + bi). It follows the design ofBigDecimalwith some convenience improvements like overloaded operator methods. A big difference toBigDecimalis thatBigComplex.equals()implements themathematicalequality andnotthe strict technical equality. This was...
Additionalifstatements can be added below theif (arg.equals("periodicRun"))statement if we have other entry points that we want to specify. Hands On You can run the code samples from this post by cloning thisrepositoryand following the instructions in the README. ...
if("dev".equals(name)) { return EnvironmentType.DEV; }else if("prod".equals(name)) { return EnvironmentType.PROD; } return null; } } ThegetEnvironmentType()method calls theEnvironmentclass to read the properties file value and then calls thegetEnvironmentType(String name)method with the re...