Java System identityHashCode() Method7 Nov 2024 | 1 min read The identityHashCode() method of Java System class returns hash code for the specified object. It is returned by the default method hashCode(). SyntaxParameterx - object for which the hashCode is to be calculated Returns
Example 1Output: identity hash code of object a = 743673026 identity hash code of object b = 743673026 identity hash code of object c = 557722442 Example 2Output: identity hash code of object a = 843730481 identity hash code of object b = 743673026 Next TopicJava-system-inheritedchannel-method |
The setErr() method of Java System class is used to reassign the "standard" error output stream. Syntax public static void setErr(PrintStream err) Parameter err - It is the new standard error output stream. Exception: SecurityException: This exception will throw if the security manager exists and its checkPermission method doesn't allow reassigning of the...
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The currentTimeMillis() method of System class returns current time in format of millisecond. Millisecond will be returned as unit of time. Syntax public static long currentTimeMillis() Returns Returns difference, measured in milliseconds, between current time and midnight January 1, 1970 UTC(coordinated universal time). Example public class SystemCurrentTimeMillisExample1 { public static void main(String[] args)...
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The getLogger() method of Java System class returns instance of logger. This instance can be used for caller's use. Syntax public static System.Logger getLogger(String name) Parameter name - name of the logger Returns It returns instance of System.Logger, which can be used by the calling class. If name is null then a NullPointerException...
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The inheritedChannel() method of Java System class returns channel inherited from entity that created this java virtual machine. Syntax public static Channel inheritedChannel() throws IOException Returns Returns the inherited channel. Returns null if channel is not there. If an I/O error occurs then IOException is thrown. If Security manager exist and doesn?t allow...
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The console() method of Java System class returns Console object only if any Console objected is associated with the java virtual machine. Syntax public static Console console() Returns The Console object of current java virtual machine. Null if Console object is not associated with current java virtual machine. Example 1 import java.io.Console; public class...
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The gc() method of System class runs the garbage collector. Through this method, JVM makes best effort to reuse the memory of discarded objects for quick reuse. Syntax public static void gc() Example 1 import java.awt.Window; public class SystemGCExample1 { public static void main(String[] args) { for (int i = 0; i<...
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The load() method of java System class loads file specified by the filename argument. Here argument must be an absolute path name. Syntax public static void load(String filename) Parameter filename - It is the file which has to load. Exception NullPointerException: This exception will throw if the filename is null. SecurityException: This exception...
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The arraycopy() method of Java System class returns or copies a subsequence components of a specified source array, begins at a specified position(referred as"srcPos") of source array(referred as "src") to the specified position(referred as "destPos") of destination array (referred as "dest"). The "length" argument is for...
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The nanoTime() method of Java System class returns high resolution time source in nanoseconds of running java virtual machine. It returns the current value of JVM. Syntax public static long nanoTime() Returns Returns a high resolution time source in nanoseconds. Example public class SystemNanoTimeExample1 { public static void main(String[] args) { System.out.println("Current time in...
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The setProperty() method of Java system class sets the property of the system which is indicated by a key. Syntax: public static String setProperty(String key, String value ) Parameters: key - It is the name of the system property. value - It is the value of the system property. Returns This method returns...
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