java se 8 programmer Ⅰ memo

java.lang.StringBuilder When you call the no-argument constructor of the StringBuilder class and instantiate it, a char type array with a buffer with an initial value of 16 is generated. So the initial value is an empty string. I thought it was null for some reason. .. .. Of course, if you just declare a variable of type StringBuilder, it will be null.

Recommended Posts

java se 8 programmer Ⅰ memo

Java SE 7 memo

Java memo

Oracle Certified Java Programmer, Gold SE 8

java anything memo

Java SE Overview

Java Silver memo

java, maven memo

java anything memo 2

Java SE Subscription

Java specification memo

Java pattern memo

Java SE 8 Silver (Java SE 8 Programmer I) Pass Note

Passed Java SE8 Silver

Java development environment memo

java basic knowledge memo

Java learning memo (method)

Java Kuche Day memo

[Java ~ Method ~] Study memo (5)

Java paid private memo

[java] Java SE 8 Silver Note

[Java ~ Array ~] Study memo 4

Java learning memo (basic)

java lambda expression memo

(Memo) Java for statement

Java lambda expression [memo]

Java learning memo (interface)

[Java] Implicit inheritance memo

Java learning memo (inheritance)

java competitive programming memo

[Memo] Java Linked List

Oracle Certified Java Programmer, Silver SE 8 Certification Examination Experience

Story of passing Java Silver SE8 (Oracle Certified Java Programmer, Silver SE 8)

Obtained Oracle Certified Java Programmer Silver SE 8 Examination experience

New topics from the Java SE 11 Programmer II exam

Java (WebSphere Application Server) memo [1]

Java memo (standard class) substring

Java SE 8 Sliver exam questions

[Experience] Passed Java SE 8 Silver

Java memo (standard class) length

On passing Java Gold SE 8

Java Silver Study Method Memo

[Java ~ Boolean value ~] Study memo (2)

Create a java method [Memo] [java11]

Java Silver exam preparation memo

I took Java SE8 Gold.

Java learning memo (logical operator)

Java learning memo (abstract class)

Java SE8 Silver Pass Experience

[Java] Date Related Term Memo

Java study memo 2 with Progate

What are Java metrics? _Memo_20200818

Java HashMap, entrySet [Personal memo]

Let's talk about the passing experience of Java SE 8 Programmer II

How to study Java Silver SE 8

[Eclipse Java] Development environment setting memo

Java learning memo (creating an array)

Personal memo: Metaprogramming with Java reflection

JCA (Java Cryptography Architecture) Usage Memo

[Java] Memo for naming class names

Java SE Bronze (1Z0-818) Passing Experience