public static void main(String[] args) { // TODO 自动生成方法存根 } static{ Test5.a=5; System.out.println(a); } public void f(){ System.out.println("hhahhahah"); } } 运行结果: 3 hhahhahah 1000 4 5 利用静态代码块可以对一些static变量进行赋值,最后再看一眼这些例子,都一个static的...
public static void main(String[] args) { try{ int i = 100 / 0; System.out.print(i); }catch(Exception e){ System.out.print(1); throw new RuntimeException(); }finally{ System.out.print(2); } System.out.print(3); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13...
public static void main(String[] args) { Provider provider = new SendMailFactory(); Sender sender = provider.produce(); sender.Send(); } } 其实这个模式的好处就是,如果你现在想增加一个功能:发及时信息,则只需做一个实现类,实现Sender接口,同时做一个工厂类,实现Provider接口,就OK了,无需...
// vjc_compiler_define.jsl // compile with: /define:DEBUG // or uncomment the next line // #define DEBUG public class Test { public static void main(String args[]) { #if (DEBUG) System.Console.WriteLine("DEBUG defined"); #else System.Console.WriteLine("DEBUG not defined"); #endif ...
publicclassRuntimeException {publicstaticvoidmain(String[] args) {//TODO Auto-generated method stubString str="123";inttemp=Integer.parseInt(str); System.out.println(temp*temp); } } 查看parseInt方法的源代码如下: publicstaticintparseInt(String s) throws NumberFormatException {returnparseInt(s,10)...
public interface Messages { // static method static void display() { System.out.println("Hello! Nice to meet you"); } } public class Test { public static void main(String[] args) { Messages.display(); } } Output: Hello! Nice to meet you The question is can we override a static...
publicclassDogLauncher{publicstaticvoidmain(String[]args){Dogdog=newDog();dog.weightInPounds=100;dog.makeNoise();}} 在面向对象编程中使用dog.weightInPounds = 100;并不常见。更多的是为实体类写一个构造方法为其赋值。 构造函数: publicDog(intw){weightInPounds=w;} ...
publicstaticvoidmain(String...args){Stringprofile="my-deploy-profile";StringpkgFilter="com.example";DeployToolsdeployTools=newDeployTools();Deployerdeployer=deployTools.findDeployer(network,pkgFilter);deployTools.runDeployer(deployer,pkgFilter); } ...
void printf(String format, Object... args); } void printf(String format, Object... args); } public static void main(String[] args) { CLibrary.INSTANCE.printf("Hello, World\n"); for (int i=0;i < args.length;i++) { CLibrary.INSTANCE.printf("Argument %d: %s\n", i, args[i]...
简介:1.RuntimeException public class RuntimeException { public static void main(String[] args) { // TODO Auto-generated method stub String str="123"; int temp=Integer. 1.RuntimeException publicclassRuntimeException {publicstaticvoidmain(String[] args) {//TODO Auto-generated method stubString...