Trivia questions and answers, drawn fresh from the well

• Hard Hard difficulty.
• Java

What is the maximum number of constant pool entries allowed in a Java class file?

Answer

65534

Draw the answer

• Intermediate Intermediate difficulty.
• Java

What is the default initial capacity of a `StringBuilder` in Java?

Answer

16

Draw the answer

• Easy Easy difficulty.
• Java

What is the initial value of a boolean field in a Java class?

Answer

false

Draw the answer

• Hard Hard difficulty.
• Java

Which Java version removed the permanent generation (PermGen)?

Answer

Java 8

Draw the answer

• Intermediate Intermediate difficulty.
• Java

Which version of Java introduced the 'assert' keyword?

Answer

Java 1.4

Draw the answer

• Easy Easy difficulty.
• Java

What is the parent class of all Java classes?

Answer

Object

Draw the answer

• Hard Hard difficulty.
• Java

What is the name of the field that identifies a serializable class's version?

Answer

serialVersionUID

Draw the answer

• Hard Hard difficulty.
• Java

Which Java bytecode instruction is used to invoke a static method?

Answer

invokestatic

Draw the answer

• Hard Hard difficulty.
• Java

What is the maximum number of elements a Java array can hold?

Answer

2,147,483,647

Draw the answer

• Intermediate Intermediate difficulty.
• Java

What is the name of the technique where multiple methods share the same name but have different parameters?

Answer

method overloading

Draw the answer

• Intermediate Intermediate difficulty.
• Java

Which functional interface in java.util.function takes one argument and returns a boolean?

Answer

Predicate

Draw the answer

• Intermediate Intermediate difficulty.
• Java

What is the name of the utility class providing static methods for collections in Java?

Answer

java.util.Collections

Draw the answer