java cast object to int

Reprint: http://www.cnblogs.com/1020182600HENG/p/6137206.htmlObject obj = getObject (); if (obj instanceof Integer) int value = (Integer) obj;1 method of converting string to int type: 1. Integer.parseint ([string]) 2.integer.valueof ([string]).

The following is a comprehensive revision of the original Java face test set and answers to the questions and answers, the original topic has a lot of repeated topics and worthless topics, there are a lot of reference to the answer is also wrong,

The role of "styling" (Cast) is to "match a model". When appropriate, Java converts one data type automatically to another. For example, suppose we assign an integer value to a floating-point variable, and the computer automatically converts the int

List of interview questions:First, Javase common face questions1, Static and final difference? When you use the final keyword to decorate a variable,Is the reference immutable, or does the referenced object not change?2. What is the difference

Three ways to convert string types to Objects First, the use of object.tostring () The ToString method is a public method of the Java.lang.Object object. Any object in Java inherits the object, so it is generally possible for any object to invoke

4 Types of access permissions in 1.java(1). Public maximum access control permission, which is visible to all classes.(2). Protect the same package is visible, not all subclasses of the same package are visible.(3). The default package access

life cycle Analysis of Java objectsThe life cycle of a Java object consists of roughly three phases: object creation, object usage, and object cleanup. Therefore, the life cycle length of an object can be expressed in the following expression: T = T1

As a new language, Java defines a standard runtime environment where user-defined classes are executed. These user-defined instances represent data in the real environment, including data stored in databases, files, or some large transaction

object to intint count= (int) map.get ("Count")int Count=integer.parseint (String) map.get ("Count"));int Count=integer.parseint (Map.get ("Count"). ToString ());Automatic data type conversionsAutomatic conversions are converted in order from low to

1. In the interview today encountered a problem, the code is as follows: public class Test2 {public static void Main (string[] args) { int[] arr=new int[5]; Assigning value to an array member arr[0]=2; arr[3]=5; for (int i = 0; i The