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Description

The Java Integer toBinaryString() method returns a string representation of the integer argument as an unsigned integer in base 2.

Declaration

Following is the declaration for java.lang.Integer.toBinaryString() method

public static String toBinaryString(int i)

Parameters

i − This is an integer to be converted to a string.

Return Value

This method returns the string representation of the unsigned integer value represented by the argument in binary (base 2).

Exception

NA

Getting Binary Representation of a Positive int Value Example

The following example shows the usage of Integer toBinaryString() method to get the binary string representation of the specified int value. We've created a int variable and assigned it a positive int value. Then using toBinaryString() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = 170;
      System.out.println("Number = " + i);
    
      /* returns the binary string representation of the given number */
      System.out.println("toBinaryString = " + Integer.toBinaryString(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = 170
toBinaryString = 10101010

Getting Binary Representation of a Negative int Value Example

The following example shows the usage of Integer toBinaryString() method to get the binary string representation of the specified int value. We've created a int variable and assigned it a negative int value. Then using toBinaryString() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = -170;
      System.out.println("Number = " + i);
    
      /* returns the binary string representation of the given number */
      System.out.println("toBinaryString = " + Integer.toBinaryString(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = -170
toBinaryString = 11111111111111111111111101010110

Getting Binary Representation of a Positive Zero int Value Example

The following example shows the usage of Integer toBinaryString() method to get the binary string representation of the specified int value. We've created a int variable and assigned it a zero value. Then using toBinaryString() method, we're printing the result.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {
      int i = 0;
      System.out.println("Number = " + i);
    
      /* returns the binary string representation of the given number */
      System.out.println("toBinaryString = " + Integer.toBinaryString(i));
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Number = 0
toBinaryString = 0

java_lang_integer.htm