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JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes:
"C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/lang/Runtime.java
/* * @(#)Runtime.java 1.30 01/12/10 * * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.lang; import java.io.*; import java.util.StringTokenizer; /* * Every Java application has a single instance of class * <code>Runtime</code> that allows the application to interface with * the environment in which the application is running. The current * runtime can be obtained from the <code>getRuntime</code> method. * <p> * An application cannot create its own instance of this class. * * @author unascribed * @version 1.30, 12/10/01 * @see java.lang.Runtime#getRuntime() * @since JDK1.0 */ public class Runtime { private static Runtime currentRuntime = new Runtime(); /** * Returns the runtime object associated with the current Java application. * * @return the <code>Runtime</code> object associated with the current * Java application. * @since JDK1.0 */ public static Runtime getRuntime() { return currentRuntime; } /** Don't let anyone else instantiate this class */ private Runtime() {} /* Helper for exit */ private native void exitInternal(int status); /** * Terminates the currently running Java Virtual Machine. This * method never returns normally. * <p> * If there is a security manager, its <code>checkExit</code> method * is called with the status as its argument. This may result in a * security exception. * <p> * The argument serves as a status code; by convention, a nonzero * status code indicates abnormal termination. * * @param status exit status. * @exception SecurityException if the current thread cannot exit with * the specified status. * @see java.lang.SecurityException * @see java.lang.SecurityManager#checkExit(int) * @since JDK1.0 */ public void exit(int status) { SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkExit(status); } exitInternal(status); } /** * Enable or disable finalization on exit; doing so specifies that the * finalizers of all objects that have finalizers that have not yet been * automatically invoked are to be run before the Java runtime exits. * By default, finalization on exit is disabled. An invocation of * the runFinalizersOnExit method is permitted only if the caller is * allowed to exit, and is otherwise rejected by the security manager. * @see Runtime#gc * @see Runtime#exit * @since JDK1.1 */ public static void runFinalizersOnExit(boolean value) { SecurityManager security = System.getSecurityManager(); if (security != null) { try { security.checkExit(0); } catch (SecurityException e) { throw new SecurityException("runFinalizersOnExit"); } } runFinalizersOnExit0(value); } /* * Private variable holding the boolean determining whether to finalize * on exit. The default value of the variable is false. See the comment * on Runtime.runFinalizersOnExit for constraints on modifying this. */ private static native void runFinalizersOnExit0(boolean value); /* Helper for exec */ private native Process execInternal(String cmdarray[], String envp[]) throws IOException; /** * Executes the specified string command in a separate process. * <p> * The <code>command</code> argument is parsed into tokens and then * executed as a command in a separate process. This method has * exactly the same effect as <code>exec(command, null)</code>. * * @param command a specified system command. * @return a <code>Process</code> object for managing the subprocess. * @exception SecurityException if the current thread cannot create a * subprocess. * @see java.lang.Runtime#exec(java.lang.String, java.lang.String[]) * @since JDK1.0 */ public Process exec(String command) throws IOException { return exec(command, null); } /** * Executes the specified string command in a separate process with the * specified environment. * <p> * This method breaks the <code>command</code> string into tokens and * creates a new array <code>cmdarray</code> containing the tokens; it * then performs the call <code>exec(cmdarray, envp)</code>. * * @param command a specified system command. * @param envp array containing environment in format * <i>name</i>=<i>value</i> * @return a <code>Process</code> object for managing the subprocess. * @exception SecurityException if the current thread cannot create a * subprocess. * @see java.lang.Runtime#exec(java.lang.String[], java.lang.String[]) * @since JDK1.0 */ public Process exec(String command, String envp[]) throws IOException { int count = 0; String cmdarray[]; StringTokenizer st; st = new StringTokenizer(command); count = st.countTokens(); cmdarray = new String[count]; st = new StringTokenizer(command); count = 0; while (st.hasMoreTokens()) { cmdarray[count++] = st.nextToken(); } SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkExec(cmdarray[0]); } return execInternal(cmdarray, envp); } /** * Executes the specified command and arguments in a separate process. * <p> * The command specified by the tokens in <code>cmdarray</code> is * executed as a command in a separate process. This has exactly the * same effect as <code>exec(cmdarray, null)</code>. * * @param cmdarray array containing the command to call and * its arguments. * @return a <code>Process</code> object for managing the subprocess. * @exception SecurityException if the current thread cannot create a * subprocess. * @see java.lang.Runtime#exec(java.lang.String[], java.lang.String[]) * @since JDK1.0 */ public Process exec(String cmdarray[]) throws IOException { return exec(cmdarray, null); } /** * Executes the specified command and arguments in a separate process * with the specified environment. * <p> * If there is a security manager, its <code>checkExec</code> method * is called with the first component of the array * <code>cmdarray</code> as its argument. This may result in a security * exception. * <p> * Given an array of strings <code>cmdarray</code>, representing the * tokens of a command line, and an array of strings <code>envp</code>, * representing an "environment" that defines system * properties, this method creates a new process in which to execute * the specified command. * * @param cmdarray array containing the command to call and * its arguments. * @param envp array containing environment in format * <i>name</i>=<i>value</i>. * @return a <code>Process</code> object for managing the subprocess. * @exception SecurityException if the current thread cannot create a * subprocess. * @see java.lang.SecurityException * @see java.lang.SecurityManager#checkExec(java.lang.String) * @since JDK1.0 */ public Process exec(String cmdarray[], String envp[]) throws IOException { cmdarray = (String[])cmdarray.clone(); envp = (envp != null ? (String[])envp.clone() : null); SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkExec(cmdarray[0]); } return execInternal(cmdarray, envp); } /** * Returns the amount of free memory in the system. The value returned * by this method is always less than the value returned by the * <code>totalMemory</code> method. Calling the <code>gc</code> method may * result in increasing the value returned by <code>freeMemory.</code> * * @return an approximation to the total amount of memory currently * available for future allocated objects, measured in bytes. * @since JDK1.0 */ public native long freeMemory(); /** * Returns the total amount of memory in the Java Virtual Machine. * * @return the total amount of memory currently available for allocating * objects, measured in bytes. * @since JDK1.0 */ public native long totalMemory(); /** * Runs the garbage collector. * Calling this method suggests that the Java Virtual Machine expend * effort toward recycling unused objects in order to make the memory * they currently occupy available for quick reuse. When control * returns from the method call, the Java Virtual Machine has made * its best effort to recycle all unused objects. * <p> * The name <code>gc</code> stands for "garbage * collector". The Java Virtual Machine performs this recycling * process automatically as needed even if the <code>gc</code> method * is not invoked explicitly. * * @since JDK1.0 */ public native void gc(); /** * Runs the finalization methods of any objects pending finalization. * Calling this method suggests that the Java Virtual Machine expend * effort toward running the <code>finalize</code> methods of objects * that have been found to be discarded but whose <code>finalize</code> * methods have not yet been run. When control returns from the * method call, the Java Virtual Machine has made a best effort to * complete all outstanding finalizations. * <p> * The Java Virtual Machine performs the finalization process * automatically as needed if the <code>runFinalization</code> method * is not invoked explicitly. * * @see java.lang.Object#finalize() * @since JDK1.0 */ public native void runFinalization(); /** * Enables/Disables tracing of instructions. * If the <code>boolean</code> argument is <code>true</code>, this * method asks the Java Virtual Machine to print out a detailed trace * of each instruction in the Java Virtual Machine as it is executed. * The virtual machine may ignore this request if it does not support * this feature. The destination of the trace output is system * dependent. * <p> * If the <code>boolean</code> argument is <code>false</code>, this * method causes the Java Virtual Machine to stop performing the * detailed instruction trace it is performing. * * @param on <code>true</code> to enable instruction tracing; * <code>false</code> to disable this feature. * @since JDK1.0 */ public native void traceInstructions(boolean on); /** * Enables/Disables tracing of method calls. * If the <code>boolean</code> argument is <code>true</code>, this * method asks the Java Virtual Machine to print out a detailed trace * of each method in the Java Virtual Machine as it is called. The * virtual machine may ignore this request if it does not support * this feature. The destination of the trace output is system dependent. * <p> * If the <code>boolean</code> argument is <code>false</code>, this * method causes the Java Virtual Machine to stop performing the * detailed method trace it is performing. * * @param on <code>true</code> to enable instruction tracing; * <code>false</code> to disable this feature. * @since JDK1.0 */ public native void traceMethodCalls(boolean on); /** * Initializes the linker and returns the search path for shared libraries. */ private synchronized native String initializeLinkerInternal(); private native String buildLibName(String pathname, String filename); /* Helper for load and loadLibrary */ private native int loadFileInternal(String filename); /** The paths searched for libraries */ private String paths[]; private void initializeLinker() { String ldpath = initializeLinkerInternal(); char c = System.getProperty("path.separator").charAt(0); int ldlen = ldpath.length(); int i, j, n; // Count the separators in the path i = ldpath.indexOf(c); n = 0; while (i >= 0) { n++; i = ldpath.indexOf(c, i+1); } // allocate the array of paths - n :'s = n + 1 path elements paths = new String[n + 1]; // Fill the array with paths from the ldpath n = i = 0; j = ldpath.indexOf(c); while (j >= 0) { if (j - i > 0) { paths[n++] = ldpath.substring(i, j); } else if (j - i == 0) { paths[n++] = "."; } i = j + 1; j = ldpath.indexOf(c, i); } paths[n] = ldpath.substring(i, ldlen); } /** * Loads the specified filename as a dynamic library. The filename * argument must be a complete pathname. * From <code>java_g</code> it will automagically insert "_g" before the * ".so" (for example * <code>Runtime.getRuntime().load("/home/avh/lib/libX11.so");</code>). * <p> * If there is a security manager, its <code>checkLink</code> method * is called with the <code>filename</code> as its argument. This may * result in a security exception. * * @param filename the file to load. * @exception SecurityException if the current thread cannot load the * specified dynamic library. * @exception UnsatisfiedLinkError if the file does not exist. * @see java.lang.Runtime#getRuntime() * @see java.lang.SecurityException * @see java.lang.SecurityManager#checkLink(java.lang.String) * @since JDK1.0 */ public synchronized void load(String filename) { SecurityManager security = System.getSecurityManager(); int ret; if (security != null) { security.checkLink(filename); } ret = loadFileInternal(filename); if (ret == -1) { throw new OutOfMemoryError(); } else if (ret == 0) { throw new UnsatisfiedLinkError(filename); } /* else load was successful; return */ } /** * Loads the dynamic library with the specified library name. The * mapping from a library name to a specific filename is done in a * system-specific manner. * <p> * First, if there is a security manager, its <code>checkLink</code> * method is called with the <code>filename</code> as its argument. * This may result in a security exception. * <p> * If this method is called more than once with the same library * name, the second and subsequent calls are ignored. * * @param libname the name of the library. * @exception SecurityException if the current thread cannot load the * specified dynamic library. * @exception UnsatisfiedLinkError if the library does not exist. * @see java.lang.SecurityException * @see java.lang.SecurityManager#checkLink(java.lang.String) * @since JDK1.0 */ public synchronized void loadLibrary(String libname) { SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkLink(libname); } if (paths == null) { initializeLinker(); } for (int i = 0 ; i < paths.length ; i++) { int ret; String tempname = buildLibName(paths[i], libname); ret = loadFileInternal(tempname); if (ret == -1) { throw new OutOfMemoryError(); } else if (ret == 1) { // Loaded or found it already loaded return; } } // Oops, it failed throw new UnsatisfiedLinkError("no " + libname + " in shared library path"); } /** * Creates a localized version of an input stream. This method takes * an <code>InputStream</code> and returns an <code>InputStream</code> * equivalent to the argument in all respects except that it is * localized: as characters in the local character set are read from * the stream, they are automatically converted from the local * character set to Unicode. * <p> * If the argument is already a localized stream, it may be returned * as the result. * * @deprecated As of JDK 1.1, the preferred way translate a byte * stream in the local encoding into a character stream in Unicode is via * the <code>InputStreamReader</code> and <code>BufferedReader</code> * classes. * * @return a localized input stream. * @see java.io.InputStream * @see java.io.BufferedReader#BufferedReader(java.io.Reader) * @see java.io.InputStreamReader#InputStreamReader(java.io.InputStream) */ public InputStream getLocalizedInputStream(InputStream in) { return in; } /** * Creates a localized version of an output stream. This method * takes an <code>OutputStream</code> and returns an * <code>OutputStream</code> equivalent to the argument in all respects * except that it is localized: as Unicode characters are written to * the stream, they are automatically converted to the local * character set. * <p> * If the argument is already a localized stream, it may be returned * as the result. * * @deprecated As of JDK 1.1, the preferred way to translate a * Unicode character stream into a byte stream in the local encoding is via * the <code>OutputStreamWriter</code>, <code>BufferedWriter</code>, and * <code>PrintWriter</code> classes. * * @return a localized output stream. * @see java.io.OutputStream * @see java.io.BufferedWriter#BufferedWriter(java.io.Writer) * @see java.io.OutputStreamWriter#OutputStreamWriter(java.io.OutputStream) * @see java.io.PrintWriter#PrintWriter(java.io.OutputStream) */ public OutputStream getLocalizedOutputStream(OutputStream out) { return out; } }
⏎ java/lang/Runtime.java
Or download all of them as a single archive file:
File name: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
2018-11-17, 176923👍, 0💬
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