By David Flanagan, Benjamin J. Evans
The newest version of Java in a Nutshell is designed to assist skilled Java programmers get the main out of Java 7 and eight, yet it’s additionally a studying direction for brand new builders. Chock jam-packed with examples that display the best way to take entire good thing about glossy Java APIs and improvement top practices, the 1st part of this completely up to date publication offers a fast paced, no-fluff advent to the Java programming language and the middle runtime points of the Java platform.
The moment part is a connection with center strategies and APIs that exhibits you ways to accomplish actual programming paintings within the Java environment.
Get on top of things on language info, together with Java eight changes
Learn object-oriented programming, utilizing easy Java syntax
Explore generics, enumerations, annotations, and lambda expressions
Understand simple innovations utilized in object-oriented design
Examine concurrency and reminiscence, and the way they’re intertwined
Work with Java collections and deal with universal facts formats
Delve into Java’s newest I/O APIs, together with asynchronous channels
Become acquainted with improvement instruments in OpenJDK
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Extra resources for Java in a Nutshell (6th Edition)
After all, a string is an object in Java, so it contains methods that can be used to manipulate the contents of the string. Strings are also immutable in Java, which means that their state cannot be changed or altered. This makes them a bit different to work with than some of the mutable, or changeable, data types. It is important to understand how to properly make use of immutable objects, especially when attempting to change or assign different values to them. This chapter focuses on some of the most commonly used String methods and techniques for working with String objects.
Solution Use the built-in equals(), equalsIgnoreCase(), compareTo(), and compareToIgnoreCase() methods to compare the values contained within the strings. The following is a series of tests using different string-comparison operations. println("One is equal to var1 using compareTo()"); } Results in the following output: String one equals var1 using equals String one equals var1 using == String two equals var2 using equalsIgnoreCase Trying to use == on Strings that are pieced together The strings contain the same value using equals One is equal to var1 using compareTo() 51 CHAPTER 3 N STRINGS How It Works One of the trickier parts of using a programming language can come when attempting to compare two or more values.
N Note The javac –cp option may be used, rather than specifying the –classpath option. How It Works Java implements the concept of a class path. This is a directory search path that you can specify system-wide using the CLASSPATH environment variable. You can also specify the class path for a specific invocation of the JVM via the java command’s -classpath option. ) When executing Java programs, the JVM finds and loads classes as needed using the following search order: 1. The classes that are fundamental to the Java platform and are contained in the Java installation directory.