1packageExample;2classPerson3{4publicintage;//声明公共字段age5privateString name;//声明私有字段name,此时name为类的属性,下面通过公有方法进行访问6publicString getName() {7returnname;8}9publicvoidsetName(String name) {10this.name =name;11}1213publicvoideat()//定义无参数的eat方法14{15System.out...
Class Path Wild Cards Class path entries can contain the base name wildcard character (), which is considered equivalent to specifying a list of all of the files in the directory with the extension .jar or .JAR. For example, the class path entry mydir/specifies all JAR files in the dire...
importjava.util.*;publicclassJavaExample{publicstaticvoidmain(Stringargs[]){TreeSet<String>set=newTreeSet<>();set.add("Paul");set.add("Ram");set.add("Aaron");set.add("Leo");set.add("Becky");Iterator<String>it=set.iterator();while(it.hasNext()){System.out.println(it.next());}}...
class A extends Exception {} class B extends A {} public class Test { public static void main(String[] args) throws Exception { try { try { throw new B(); } catch (A a) { System.out.println("Caught A"); throw a; } } catch (B b) { System.out.println("Caught B"); return...
Let’s see the example of FutureTask with a simple program. Since FutureTask requires a callable object, we will create a simple Callable implementation. package com.journaldev.threads;importjava.util.concurrent.Callable;publicclassMyCallableimplementsCallable<String> {privatelongwaitTime;publicMyCallable...
Java programming examples Example 1: Display message on computer screen. class First { public static void main(String[] arguments) { System.out.println("Let's do something using Java technology."); } }This is similar to a hello world Java program. ...
classRectangleArea { publicstaticvoidmain(String[]args) { //Creating objects RectanglefirstRect=newRectangle(); firstRect.setData(5,6); intresult=firstRect.area(); System.out.println("Area of Rectangle = "+result); } } In this Example, we have declared two classes: Rectangle and Rectangle...
For these example policy files, all permissions are granted to the classes in the program's local class path, because the local application code is trusted, but no permissions are granted to code downloaded from other locations. Therefore, the compute engine server restricts the tasks that it ex...
This is an agent program where the code is entered through the Domino Designer UI. The UI generates everything in the example except the two lines following // (Your code goes here). import lotus.domino.*; public class JavaAgent extends AgentBase { public void NotesMain() { try { ...
An Example Program (Java in a Nutshell)David Flanagan