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- What is the Java ?: operator called and what does it do?
Not only in Java, this syntax is available within PHP, Objective-C too In the following link it gives the following explanation, which is quiet good to understand it: A ternary operator is some operation operating on 3 inputs It's a shortcut for an if-else statement, and is also known as a conditional operator In Perl PHP it works as:
- What does the ^ operator do in Java? - Stack Overflow
7 It is the Bitwise xor operator in java which results 1 for different value of bit (ie 1 ^ 0 = 1) and 0 for same value of bit (ie 0 ^ 0 = 0) when a number is written in binary form ex :- To use your example: The binary representation of 5 is 0101 The binary representation of 4 is 0100
- Setting JAVA_HOME environment variable in MS Windows
JAVA_HOME if you installed the JDK (Java Development Kit) or JRE_HOME if you installed the JRE (Java Runtime Environment) In the Variable Value field, enter your JDK or JRE installation path Open Command Prompt as Administrator Set the value of the Environment variable to your JDK (or JRE) installation path as follows:
- Remote debugging a Java application - Stack Overflow
Steps: Start your remote java application with debugging options as said in above post Configure Eclipse for remote debugging by specifying host and port Start remote debugging in Eclipse and wait for connection to succeed Setup breakpoint and debug If you want to debug from start of application use suspend=y , this will keep remote application suspended until you connect from eclipse See
- What is the difference between == and equals () in Java?
Since java lang String class override equals method, It return true if two String object contains same content but == will only return true if two references are pointing to same object Here is an example of comparing two Strings in Java for equality using == and equals() method which will clear some doubts:
- java - (AND) and || (OR) in IF statements - Stack Overflow
Java has 5 different boolean compare operators: , , |, ||, ^ and are "and" operators, | and || "or" operators, ^ is "xor" The single ones will check every parameter, regardless of the values, before checking the values of the parameters The double ones will first check the left parameter and its value and if true (||) or false ( ) leave the second one untouched Sound compilcated? An
- debugging - What are Java command line options to set to allow JVM to . . .
I know there's some JAVA_OPTS to set to remotely debug a Java program What are they and what do they mean ?
- java - How do I load a file from resource folder? - Stack Overflow
Read File as java io File Alternatively, if you need an instance of java io File, you can employ the getResource() method to retrieve the resource as a URL, and create a File from the resource's path or URI However, using the URI requires handling the URISyntaxException
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