![]() State the difference between String and StringBuffer. What does the string intern() method do in Java? Is String immutable or final in Java? If so, then what are the benefits of Strings being Immutable? State the difference between String in C and String in Java. Is String a primitive or derived type in Java? JDK 21 was published on September 19, 2023, with Oracle designating it to be a long-term support release with at least eight years of support.Java String Interview Questions for Freshers Prior to the general release, JDK 22 is set for rampdown phases beginning December 7, 2023, and Janurelease candidates are due February 8 and February 22, 2024. Other goals cover comprehensibility of shared data, robustness, and performance. Scoped values, previewed in JDK 21 and incubated in JDK 20, offer a programming model to share data both within a thread and child threads to simplify reasoning about data flow.This would result in performance performance superior to equivalent scalar computations. Vector API has been in an incubator phase for six straight releases of Java and would express vector computations that reliably compile at runtime to optimal vector instructions on supported CPU architectures.Unnamed classes and instance main methods, another feature previewed in JDK 21, evolve Java so students can write their first programs without having to understand language features designed for large programs.Unnamed patterns and variables, previewed in JDK 21, improve the readability of record patterns and the maintainability of all code. ![]() This feature lets Java programs interoperate with code and data outside the Java runtime. Foreign function and memory API was previewed for the third time in JDK 21.This capability would simplify the writing of Java programs. String templates, previewed in JDK 21, would complement string literals and text blocks by coupling literal text with embedded expressions and template processors.There is no plan to remove JNI from the platform. ![]() This prepares for a future release that restricts the use of JNI to load native libraries and call native code.
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