primitive-types

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bitset or native data types with bitwise operations for bitmap?

I would like to implement bitmaps of 64 bits, 128 bits and 256 bits. I was thinking of using specialized classes for these three.I need to开发者_StackOverflow社区 set the bits and also look them up. T[详细]

2023-04-12 20:20 分类：问答
Java: Why can't I cast int to Long

All numbers in Java are supposed to be of int type. The following line is legal in Java>1.5 Short s = 1; // Will compile to Short s = Short.valueOf((short)1) - thus you can\'t exceed short max value[详细]

2023-04-12 19:34 分类：问答
Reasoning behind having to specify L for long, F,D for float, double

A few related questions here. As per the title, why is it a requirement if we are specifying the variable type as long or float, double? Doesn\'t the compiler evaluate the variable\'s type at compile[详细]

2023-04-07 01:31 分类：问答
Java cast Long to Enum type issue

I had a little problem with casting Java long type to Enum type and can\'t find a solution how to do that.[详细]

2023-03-31 17:21 分类：问答
"Generic" solution for primitive array?

I have classes that for processing primitive array input: CharArrayExtractor for char[], ByteArrayExtractor for byte[], IntegerArrayExtractor for int[], ...[详细]

2023-03-27 22:18 分类：问答
Why casting direction is big to small in primitive types and small to big with objects?

In Java we need casting when converting double(big in memory size) to Integer (smaller in memory size)[详细]

2023-03-27 09:22 分类：问答
Passing and Editing Primitive Objects in Java

I have a interesting problem in Java, its a little wordy though so bear with me. I decided to make a customizable Jpanel to act as a properties window, So instead manually designing each panel i want[详细]

2023-03-26 14:21 分类：问答
What is meant by "Nominal storage allocation" in the context of primitive data type allocation size?

Looking at this table describing the data types in VB. One of the columns is labeled \"Nominal s开发者_如何学Pythontorage allocation\".What does this mean?Why is the word \"nominal\" here?I believe t[详细]

2023-03-24 16:16 分类：问答
java.lang.ClassNotFoundException when executing from cmd

I\'ve written the below code in a text file and saved it as Exercise1.java: import java.util.*; public class Exercise1[详细]

2023-03-23 13:45 分类：问答
Convert ArrayList<Byte> into a byte[] [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: How to convert an ArrayList containing Integers to primitive in开发者_如何学Ct array?[详细]

2023-03-23 08:25 分类：问答