Comparison of two methods of converting Integer to int in Java

This article mainly introduces the comparison of two methods of converting Java Integer to int. It has a very good reference value. Let’s take a look at it with the editor.

Method 1:

Integer.parseInt(); Returns an int value.

Method 2:

new Integer.valueof(); 　　　　　　　 返回的是 Integer 的对象。
new Integer.valueof().intValue();　　 返回的也是一个 int 的值。

Written test application examples:

Set the following two assignment statements:

a = Integer.parseInt(“123”);
b = Integer.valueOf(“123”).intValue();

The following statement is correct (d)

A. a is an integer type variable, and b is an integer type object.

B, a is an integer type object, and b is an integer type variable.

C, a and b are all integer class objects and their values ​​are equal.

D, a and b are all integer type variables and their values ​​are equal.

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