JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to create int to Integer object?


Description:

The Integer class wraps a value of the primitive type int in an object.


Code:
package com.java2novice.wrapper.integer;

public class MyBasicInteger {

	public static void main(String a[]){
		int i = 10;
		Integer intg = new Integer(i);
		System.out.println(intg);
		String no = "223";
		Integer num = new Integer(no);
		System.out.println(num);
	}
}

Output:
10
223
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List of Integer wrapper class programs:

  1. How to create int to Integer object?
  2. How to convert Integer to primitive types?
  3. How to get Integer maximum and minimum value?
  4. How to convert String to Integer value?
  5. How to convert String to signed decimal integer value?
  6. How to convert integer to binary value?
  7. How to convert integer to hexadecimal value?
  8. How to convert integer to octal value?
  9. How to convert binary value to integer value?
  10. How to convert hexadecimal value to integer value?
  11. How to convert octal value to integer value?
  12. How to convert string to integer using radix 27?
Knowledge Centre
What is java static import?
By using static imports, we can import the static members from a class rather than the classes from a given package. For example, Thread class has static sleep method, below example gives an idea:

import static java.lang.Thread;
public class MyStaticImportTest {
public static void main(String[] a) {
try{
sleep(100);
} catch(Exception ex){

}
}
}
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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