equals() - String Comparison

Home > Java > General

Q

What would you use to compare two String variables - the operator == or the method equals()?

✍: FYIcenter

A

You can use operator == and method equals() for different types of comparisons:

Using operator == to compare two string variables to see if they point the same String object.
Using equals() to compare two string variables to see if they contain the same String values.

2007-03-03, 7022👍, 0💬

💬 2016-06-25 Ron: You can also create an anonymous class and run it: Thread t = new Thread() { public void run() { // do whatever you want } }; t....

💬 2013-10-02 drinkin: This unmistakably created an audience for books fact that consciously offered the grand design models

💬 2013-07-23 XRumerTest: Hello. And Bye.

(More comments ...)

Multi-Threading
How does multi-threading take place on a computer with a single CPU? The operating system's task scheduler allocates execution time to multiple tasks. By quickly switching between executing tasks, it creates the impression that tasks execute sequentially. 2007-03-03, 8731👍, 0💬

What Is Thread
What is thread? A thread is an independent path of execution in a system. 2007-03-03, 8577👍, 0💬

List of Waiting Threads on an Object
Can each Java object keep track of all the threads that want to exclusively access to it? 2007-03-03, 7732👍, 0💬

Locking Objects for Exclusive Use
Can Java object be locked down for exclusive use by a given thread? Yes. You can lock an object by putting it in a "synchronized" block. The locked object is inaccessible to any thread other than the one that explicitly claimed it. 2007-03-03, 7659👍, 0💬

J2SDK 1.5 and J2SDK 5.0
What's the difference between J2SDK 1.5 and J2SDK 5.0? There is no difference, Sun Microsystems just re-branded this version. 2007-03-03, 7498👍, 0💬

Importance of Synchronization
What is synchronization and why is it important? With respect to multithreading, synchronization is the capability to control the access of multiple threads to shared resources. Without synchronization, it is possible for one thread to modify a shared object while another thread is in the process of... 2007-03-03, 7029👍, 0💬

equals() - String Comparison
What would you use to compare two String variables - the operator == or the method equals()? You can use operator == and method equals() for different types of comparisons: Using operator == to compare two string variables to see if they point the same String object. Using equals() to compare two st... 2007-03-03, 7023👍, 0💬

Waiting State in a Thread
What are three ways in which a thread can enter the waiting state? A thread can enter the waiting state by invoking its sleep() method, by blocking on IO, by unsuccessfully attempting to acquire an object's lock, or by invoking an object's wait() method. It can also enter the waiting state by invoki... 2007-03-03, 6546👍, 0💬

Synchronized Methods and Synchronized Statements
What are synchronized methods and synchronized statements? Synchronized methods are methods that are used to control access to a method or an object. A thread only executes a synchronized method after it has acquired the lock for the method's object or class. Synchronized statements are similar to s... 2007-03-03, 5966👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.