Java - Integer getInteger() method



Description

The Java Integer getInteger(String nm, int val) method determines the integer value of the system property with the specified name.The argument val is the default value. An Integer object that represents the value of the second argument is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null.

Declaration

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

public static Integer getInteger(String nm, int val)

Parameters

  • nm − This is the property name.

  • val − This is the default value.

Return Value

This method returns the Integer value of the property.

Exception

NA

Example 1

The following example shows the usage of Integer getInteger() method to get Integer value of a system property. We've created a string variable and assigned it a valid system property string. Then using getInteger() method, we're printing the Integer value of the system property.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {

      // determines the integer value of the system property 
      String str = "sun.arch.data.model";
      System.out.println(Integer.getInteger(str, 5));
   }
} 

Output

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

64

Example 2

The following example shows the usage of Integer getInteger() method to get Integer value of a non-existent system property. We've created a string variable and assigned it a invalid system property string. Then using getInteger() method, we're checking the Integer value of the system property which will be printed as 5 as we've passed a default value in second parameter.

package com.tutorialspoint;
public class IntegerDemo {
   public static void main(String[] args) {

      // determines the integer value of the system property 
      String str = "java";
      System.out.println(Integer.getInteger(str, 5));
   }
} 

Output

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

5
java_lang_integer.htm
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