Java Standard Library: Essential Built-in Methods in java

Java Standard Library: Built-in Method

Java provides a rich set of built-in methods through its standard libraries. These methods are grouped into classes across various packages like java.lang, java.util, java.io, etc. Here’s a categorized list of commonly used built-in methods in Java:

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✅ 1. String Methods (java.lang.String) 

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✅ 2. Math Methods (java.lang.Math)

✅ 3. Wrapper Class Methods (Integer, Double, etc.)

✅ 4. Array Methods (java.util.Arrays)

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✅ 5. Collections Methods (java.util.Collections)

✅ 6. System Methods (java.lang.System)

✅ 7. Thread Methods (java.lang.Thread)