The Boolean type in Java takes up a few bytes

Source: Internet
Author: User

In Java's basic data type, the Boolean has only two states and the default value is False. The value range is {True,false}, which theoretically accounts for 1bit, actually:

1. A single Boolean type variable is used when compiling the int type.

Boolean a=true;//This A is 4 bytes in the JVM: 32 bits.

An array of type 2.boolean is compiled as a byte array at compile time, so each element in the Boolean array takes one byte,

Boolean[] B = new boolean[10];//array, each boolean takes one byte in the JVM

So instead of using an int array when creating a new state variable array, use a Boolean array.

The Boolean type in Java takes up a few bytes

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