Java programming ideology (version 4) * Chapter 2 personal exercises and java programming ideology

Java programming ideology (version 4) * Chapter 2 personal exercises and java programming ideology
Create a class that contains an int field and a char field. They are not initialized and printed out to verify that java performs the default initialization.

Public class DomTest {int I; char c; public DomTest () {System. out. println ("I =" + I + "\ nc = [" + c + "]" + "\ n []"); /*** print the following result: I = 0 c = [] [] // For comparison only. */}/*** @ param args */public static void main (String [] args) {new DomTest ();}}

Create a Hello, world program. This program only needs to output this sentence.

Public class DomTest {/*** @ param args */public static void main (String [] args) {System. out. println ("Hello, Word");}/*** running result Hello Word */}

Find the code segment containing ATypeName, rewrite it into a complete program, compile and run it.

Public class ATypeName {public static void main (String [] args) {System. out. println ("Hello Word") ;}/ *** running result Hello Word */}

Java programming ideas fourth edition Chapter 2 exercise questions

Exercise 2
//: C02: E02_ATypeName.java
// + M java E02_ATypeName
/***************** Exercise 2 ******************
* Find the code fragments involving ATypeName
* And turn them into a program that compiles and
* Runs.
**************************************** *******/
Public class E02_ATypeName {
Public static void main (String args []) {
E02_ATypeName a = new E02_ATypeName ();
}
}///:~
 
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