logo

TechCodeview

Java.util.jar.JarEntry klasse i Java

Denne klasse bruges til at repræsentere en JAR-filpost. Konstruktører:
    JarEntry(JarEntry eat):Opretter en ny JarEntry med felter taget fra det angivne JarEntry-objekt. JarEntry (strengnavn):Opretter en ny JarEntry for det angivne JAR-filindgangsnavn. JarEntry(ZipEntry med):Opretter en ny JarEntry med felter taget fra det angivne ZipEntry-objekt.
Metoder:
    Attributter getAttributes(): Returns the Manifest Attributes for this entry or null if none. 
      Syntax :  public Attributes getAttributes() throws IOException   Returns:   the Manifest Attributes for this entry or null if none
    Certifikat[] getCertificates() : Returns the Certificate objects for this entry or null if none. 
      Syntax :  public Certificate[] getCertificates()   Returns:   the Certificate objects for this entry or null if none.
    CodeSigner[] getCodeSigners() : Returns the CodeSigner objects for this entry or null if none. 
      Syntax :  public CodeSigner[] getCodeSigners()   Returns:   the CodeSigner objects for this entry or null if none.
Metoder arvet fra klassen java.util.zip.ZipEntry clone getComment getCompressedSize getCrc getExtra getMethod getName getSize getTime hashCode isDirectory setComment setCompressedSize setCrc setExtra setMethod setSize setTime toString Metoder arvet fra klassen java.lang.Object er lig med afslutte getClass notify notifyAlle vent vent vent Bemærk: Programmerne vil ikke køre på online IDE, da de ikke er i stand til at læse filen Program 1: Java 
//Java program demonstrating JarEntry method import java.io.FileInputStream; import java.io.IOException; import java.io.PrintStream; import java.util.jar.JarEntry; import java.util.jar.JarInputStream; class JarEntryDemo {  public static void main(String[] args) throws IOException   {  FileInputStream fis = new FileInputStream('codechecker.jar');  JarInputStream jis = new JarInputStream(fis);  JarEntry je=jis.getNextJarEntry();  PrintStream out = System.out;  //illustrating getAttributes  out.println(je.getAttributes());  //illustrating getCodeSigner  out.println(je.getCodeSigners());  //illustrating getCertificates  out.println(je.getCertificates());  } }
Program 2: Java 
//Java program demonstrating JarEntry method package java.util.jar;    import java.io.IOException;  import java.util.zip.ZipEntry;  import java.security.CodeSigner;  import java.security.cert.Certificate;  public class JarEntry extends ZipEntry  {  Attributes attr;  Certificate[] certs;  CodeSigner[] signers;    public JarEntry(String name)   {  super(name);  }    public JarEntry(ZipEntry ze)   {  super(ze);  }    public JarEntry(JarEntry je)  {  this((ZipEntry)je);  this.attr = je.attr;  this.certs = je.certs;  this.signers = je.signers;  }    public Attributes getAttributes() throws IOException   {  return attr;  }    public Certificate[] getCertificates()   {  return certs == null ? null : (Certificate[]) certs.clone();  }    public CodeSigner[] getCodeSigners()     {  return signers == null ? null : (CodeSigner[]) signers.clone();  } }
Opret quiz