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Java Convert Binary to Decimal

We can convert binary to decimal in java using Integer.parseInt() method or custom logic.

Java Binary to Decimal conversion: Integer.parseInt()

The Integer.parseInt() method converts string to int with given redix. The signature of parseInt() method is given below:

Let's see the simple example of converting binary to decimal in java.

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Output:

10

Let's see another example of Integer.parseInt() method.

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Output:

10
21
31

Java Binary to Decimal conversion: Custom Logic

We can convert binary to decimal in java using custom logic.

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Output:

Decimal of 1010 is: 10
Decimal of 10101 is: 21
Decimal of 11111 is: 31




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