Java
Browse 446 guides in Java
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How to sort a List/ArrayList?
Learn how to sort a list/arraylist? with practical examples, diagrams, and best practices. Covers java, list, sorting development techniques with visual explanations.

&& (AND) and || (OR) in IF statements
Learn && (and) and || (or) in if statements with practical examples, diagrams, and best practices. Covers java, if-statement development techniques with visual explanations.
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Reverse a string in Java
Learn reverse a string in java with practical examples, diagrams, and best practices. Covers java, string development techniques with visual explanations.

How do I use 3DES encryption/decryption in Java?
Learn how do i use 3des encryption/decryption in java? with practical examples, diagrams, and best practices. Covers java, encryption, 3des development techniques with visual explanations.
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A long bigger than Long.MAX_VALUE
Learn a long bigger than long.max_value with practical examples, diagrams, and best practices. Covers java, long-integer development techniques with visual explanations.

How to download JRE 1.8 for production environment?
Learn how to download jre 1.8 for production environment? with practical examples, diagrams, and best practices. Covers java, oracle-database, java-8 development techniques with visual explanations.
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Calling Non-Static Method In Static Method In Java
Learn calling non-static method in static method in java with practical examples, diagrams, and best practices. Covers java, static, non-static development techniques with visual explanations.
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Difference of Enum between java and C++?
Learn difference of enum between java and c++? with practical examples, diagrams, and best practices. Covers java, c++ development techniques with visual explanations.

Generating a Random Number between 1 and 10 Java
Learn generating a random number between 1 and 10 java with practical examples, diagrams, and best practices. Covers java, random development techniques with visual explanations.
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what is loose coupling and tight coupling in oop ( java )
Learn what is loose coupling and tight coupling in oop ( java ) with practical examples, diagrams, and best practices. Covers java, oop development techniques with visual explanations.

round up to 2 decimal places in java?
Learn round up to 2 decimal places in java? with practical examples, diagrams, and best practices. Covers java development techniques with visual explanations.
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Exception : mockito wanted but not invoked, Actually there were zero interactions with this mock
Learn exception : mockito wanted but not invoked, actually there were zero interactions with this mock with practical examples, diagrams, and best practices. Covers java, unit-testing, mockito deve...

What does PMD stand for?
Learn what does pmd stand for? with practical examples, diagrams, and best practices. Covers java, code-analysis, pmd development techniques with visual explanations.

how to get all attributes of a class?
Learn how to get all attributes of a class? with practical examples, diagrams, and best practices. Covers java development techniques with visual explanations.
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What is the default stack size, can it grow, how does it work with garbage collection?
Learn what is the default stack size, can it grow, how does it work with garbage collection? with practical examples, diagrams, and best practices. Covers java, memory, stack development techniques...

@Autowired - No qualifying bean of type found for dependency
Learn @autowired - no qualifying bean of type found for dependency with practical examples, diagrams, and best practices. Covers java, spring, spring-mvc development techniques with visual explanat...

Could not open JPA EntityManager for transaction; nested exception is java.lang.IllegalStateExcep...
Learn could not open jpa entitymanager for transaction; nested exception is java.lang.illegalstateexception with practical examples, diagrams, and best practices. Covers java, spring, hibernate dev...
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How can I mount a windows drive in Java?
Learn how can i mount a windows drive in java? with practical examples, diagrams, and best practices. Covers java, windows-services, unc development techniques with visual explanations.

Java: break statement in "if else"
Learn java: break statement in "if else" with practical examples, diagrams, and best practices. Covers java, if-statement, for-loop development techniques with visual explanations.

Could not resolve placeholder in string value
Learn could not resolve placeholder in string value with practical examples, diagrams, and best practices. Covers java, spring development techniques with visual explanations.

How to make Selenium wait until an element is present?
Learn how to make selenium wait until an element is present? with practical examples, diagrams, and best practices. Covers java, selenium, selenium-webdriver development techniques with visual expl...

Java: unparseable date exception
Learn java: unparseable date exception with practical examples, diagrams, and best practices. Covers java, date, format development techniques with visual explanations.
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Why Android Studio says "Waiting For Debugger" if am NOT debugging?
Learn why android studio says "waiting for debugger" if am not debugging? with practical examples, diagrams, and best practices. Covers java, android, android-studio development techniques with vis...
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How do I change the default application icon in Java?
Learn how do i change the default application icon in java? with practical examples, diagrams, and best practices. Covers java, icons development techniques with visual explanations.
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Why import javax.swing.* instead of java.swing.*
Learn why import javax.swing.* instead of java.swing.* with practical examples, diagrams, and best practices. Covers java, swing, package development techniques with visual explanations.
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Where is System.err on Windows?
Learn where is system.err on windows? with practical examples, diagrams, and best practices. Covers java, windows, stdout development techniques with visual explanations.