DumpClass-example

Example implementation of a DumpClass helper to show reflection properties available in the absence of Intellisense.

Code

public static void main(String[] args) {

	Pattern p = Pattern.compile("[a-z]");
	DumpClass(Pattern.class);
	
	Matcher m = p.matcher("f");
	DumpClass(m);
	Dump(m);
}

public static void DumpClass(Object o) {
	DumpClass(o.getClass());
}

public static void DumpClass(Class c) {
	System.out.println("--Class " + c.getTypeName() + "--");
	for (java.lang.reflect.Method m : c.getMethods()) {
		Class rt = m.getReturnType();
		Class[] pt = m.getParameterTypes();
		System.out.print("\t" + rt.getName() + " " + m.getName() + "(");
		for (java.lang.Class ct : pt) {
			System.out.print(ct.getName() + ",");
		}
		System.out.println(")");
	}
	System.out.println();
}

Result

Console

--Class java.util.regex.Pattern--
	java.lang.String toString()
	int flags()
	java.util.regex.Pattern compile(java.lang.String,)
	java.util.regex.Pattern compile(java.lang.String,int,)
	java.util.regex.Matcher matcher(java.lang.CharSequence,)
	boolean matches(java.lang.String,java.lang.CharSequence,)
	[Ljava.lang.String; split(java.lang.CharSequence,int,)
	[Ljava.lang.String; split(java.lang.CharSequence,)
	java.lang.String quote(java.lang.String,)
	java.util.function.Predicate asPredicate()
	java.lang.String pattern()
	java.util.stream.Stream splitAsStream(java.lang.CharSequence,)
	void wait()
	void wait(long,int,)
	void wait(long,)
	boolean equals(java.lang.Object,)
	int hashCode()
	java.lang.Class getClass()
	void notify()
	void notifyAll()

--Class java.util.regex.Matcher--
	int end(java.lang.String,)
	int end()
	int end(int,)
	java.lang.String group(java.lang.String,)
	java.lang.String group(int,)
	java.lang.String group()
	java.lang.String toString()
	boolean matches()
	java.lang.String quoteReplacement(java.lang.String,)
	java.lang.String replaceAll(java.lang.String,)
	java.lang.String replaceFirst(java.lang.String,)
	boolean find(int,)
	boolean find()
	int start()
	int start(int,)
	int start(java.lang.String,)
	java.util.regex.Matcher reset()
	java.util.regex.Matcher reset(java.lang.CharSequence,)
	java.util.regex.Matcher appendReplacement(java.lang.StringBuffer,java.lang.String,)
	java.lang.StringBuffer appendTail(java.lang.StringBuffer,)
	java.util.regex.Matcher region(int,int,)
	java.util.regex.Pattern pattern()
	boolean hitEnd()
	int groupCount()
	boolean hasAnchoringBounds()
	boolean hasTransparentBounds()
	boolean lookingAt()
	int regionEnd()
	int regionStart()
	boolean requireEnd()
	java.util.regex.MatchResult toMatchResult()
	java.util.regex.Matcher useAnchoringBounds(boolean,)
	java.util.regex.Matcher usePattern(java.util.regex.Pattern,)
	java.util.regex.Matcher useTransparentBounds(boolean,)
	void wait()
	void wait(long,int,)
	void wait(long,)
	boolean equals(java.lang.Object,)
	int hashCode()
	java.lang.Class getClass()
	void notify()
	void notifyAll()

java.util.regex.Matcher[pattern=[a-z] region=0,1 lastmatch=]

Bytecode

Compiled from "RunnContainer.java"
public class io.jpad.scratch.RunnContainer {
  public io.jpad.scratch.RunnContainer();
    Code:
       0: aload_0
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: return

  public static void main(java.lang.String[]);
    Code:
       0: ldc           #2                  // String [a-z]
       2: invokestatic  #3                  // Method java/util/regex/Pattern.compile:(Ljava/lang/String;)Ljava/util/regex/Pattern;
       5: astore_1
       6: ldc           #4                  // class java/util/regex/Pattern
       8: invokestatic  #5                  // Method DumpClass:(Ljava/lang/Class;)V
      11: aload_1
      12: ldc           #6                  // String f
      14: invokevirtual #7                  // Method java/util/regex/Pattern.matcher:(Ljava/lang/CharSequence;)Ljava/util/regex/Matcher;
      17: astore_2
      18: aload_2
      19: invokestatic  #8                  // Method DumpClass:(Ljava/lang/Object;)V
      22: aload_2
      23: invokestatic  #9                  // Method io/jpad/scratch/Dumper.Dump:(Ljava/lang/Object;)Ljava/lang/Object;
      26: pop
      27: return

  public static void DumpClass(java.lang.Object);
    Code:
       0: aload_0
       1: invokevirtual #10                 // Method java/lang/Object.getClass:()Ljava/lang/Class;
       4: invokestatic  #5                  // Method DumpClass:(Ljava/lang/Class;)V
       7: return

  public static void DumpClass(java.lang.Class);
    Code:
       0: getstatic     #11                 // Field java/lang/System.out:Ljava/io/PrintStream;
       3: new           #12                 // class java/lang/StringBuilder
       6: dup
       7: invokespecial #13                 // Method java/lang/StringBuilder."<init>":()V
      10: ldc           #14                 // String --Class
      12: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      15: aload_0
      16: invokevirtual #16                 // Method java/lang/Class.getTypeName:()Ljava/lang/String;
      19: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      22: ldc           #17                 // String --
      24: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      27: invokevirtual #18                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
      30: invokevirtual #19                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
      33: aload_0
      34: invokevirtual #20                 // Method java/lang/Class.getMethods:()[Ljava/lang/reflect/Method;
      37: astore_1
      38: aload_1
      39: arraylength
      40: istore_2
      41: iconst_0
      42: istore_3
      43: iload_3
      44: iload_2
      45: if_icmpge     189
      48: aload_1
      49: iload_3
      50: aaload
      51: astore        4
      53: aload         4
      55: invokevirtual #21                 // Method java/lang/reflect/Method.getReturnType:()Ljava/lang/Class;
      58: astore        5
      60: aload         4
      62: invokevirtual #22                 // Method java/lang/reflect/Method.getParameterTypes:()[Ljava/lang/Class;
      65: astore        6
      67: getstatic     #11                 // Field java/lang/System.out:Ljava/io/PrintStream;
      70: new           #12                 // class java/lang/StringBuilder
      73: dup
      74: invokespecial #13                 // Method java/lang/StringBuilder."<init>":()V
      77: ldc           #23                 // String \t
      79: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      82: aload         5
      84: invokevirtual #24                 // Method java/lang/Class.getName:()Ljava/lang/String;
      87: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      90: ldc           #25                 // String
      92: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      95: aload         4
      97: invokevirtual #26                 // Method java/lang/reflect/Method.getName:()Ljava/lang/String;
     100: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
     103: ldc           #27                 // String (
     105: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
     108: invokevirtual #18                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
     111: invokevirtual #28                 // Method java/io/PrintStream.print:(Ljava/lang/String;)V
     114: aload         6
     116: astore        7
     118: aload         7
     120: arraylength
     121: istore        8
     123: iconst_0
     124: istore        9
     126: iload         9
     128: iload         8
     130: if_icmpge     175
     133: aload         7
     135: iload         9
     137: aaload
     138: astore        10
     140: getstatic     #11                 // Field java/lang/System.out:Ljava/io/PrintStream;
     143: new           #12                 // class java/lang/StringBuilder
     146: dup
     147: invokespecial #13                 // Method java/lang/StringBuilder."<init>":()V
     150: aload         10
     152: invokevirtual #24                 // Method java/lang/Class.getName:()Ljava/lang/String;
     155: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
     158: ldc           #29                 // String ,
     160: invokevirtual #15                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
     163: invokevirtual #18                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
     166: invokevirtual #28                 // Method java/io/PrintStream.print:(Ljava/lang/String;)V
     169: iinc          9, 1
     172: goto          126
     175: getstatic     #11                 // Field java/lang/System.out:Ljava/io/PrintStream;
     178: ldc           #30                 // String )
     180: invokevirtual #19                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
     183: iinc          3, 1
     186: goto          43
     189: getstatic     #11                 // Field java/lang/System.out:Ljava/io/PrintStream;
     192: invokevirtual #31                 // Method java/io/PrintStream.println:()V
     195: return
}

Jpad Version:1.05

viewCount:3131

Creator: mellamokb

Latest Editor: mellamokb

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**code [DumpClass-example.java](/example/1v/dumpclass-example)**

public static void main(String[] args) {
    
    	Pattern p = Pattern.compile("[a-z]");
    	DumpClass(Pattern.class);
    	
    	Matcher m = p.matcher("f");
    	DumpClass(m);
    	Dump(m);
    }
    
    public static void DumpClass(Object o) {
    	DumpClass(o.getClass());
    }
    
    public static void DumpClass(Class c) {
    	System.out.println("--Class " + c.getTypeName() + "--");
    	for (java.lang.reflect.Method m : c.getMethods()) {
    		Class rt = m.getReturnType();
    		Class[] pt = m.getParameterTypes();
    		System.out.print("\t" + rt.getName() + " " + m.getName() + "(");
    		for (java.lang.Class ct : pt) {
    			System.out.print(ct.getName() + ",");
    		}
    		System.out.println(")");
    	}
    	System.out.println();
    }
**Result:**

--Class java.util.regex.Pattern--
    	java.lang.String toString()
    	int flags()
    	java.util.regex.Pattern compile(java.lang.String,)
    	java.util.regex.Pattern compile(java.lang.String,int,)
    	java.util.regex.Matcher matcher(java.lang.CharSequence,)
    	boolean matches(java.lang.String,java.lang.CharSequence,)
    	[Ljava.lang.String; split(java.lang.CharSequence,int,)
    	[Ljava.lang.String; split(java.lang.CharSequence,)
    	java.lang.String quote(java.lang.String,)
    	java.util.function.Predicate asPredicate()
    	java.lang.String pattern()
    	java.util.stream.Stream splitAsStream(java.lang.CharSequence,)
    	void wait()
    	void wait(long,int,)
    	void wait(long,)
    	boolean equals(java.lang.Object,)
    	int hashCode()
    	java.lang.Class getClass()
    	void notify()
    	void notifyAll()
    
    --Class java.util.regex.Matcher--
    	int end(java.lang.String,)
    	int end()
    	int end(int,)
    	java.lang.String group(java.lang.String,)
    	java.lang.String group(int,)
    	java.lang.String group()
    	java.lang.String toString()
    	boolean matches()
    	java.lang.String quoteReplacement(java.lang.String,)
    	java.lang.String replaceAll(java.lang.String,)
    	java.lang.String replaceFirst(java.lang.String,)
    	boolean find(int,)
    	boolean find()
    	int start()
    	int start(int,)
    	int start(java.lang.String,)
    	java.util.regex.Matcher reset()
    	java.util.regex.Matcher reset(java.lang.CharSequence,)
    	java.util.regex.Matcher appendReplacement(java.lang.StringBuffer,java.lang.String,)
    	java.lang.StringBuffer appendTail(java.lang.StringBuffer,)
    	java.util.regex.Matcher region(int,int,)
    	java.util.regex.Pattern pattern()
    	boolean hitEnd()
    	int groupCount()
    	boolean hasAnchoringBounds()
    	boolean hasTransparentBounds()
    	boolean lookingAt()
    	int regionEnd()
    	int regionStart()
    	boolean requireEnd()
    	java.util.regex.MatchResult toMatchResult()
    	java.util.regex.Matcher useAnchoringBounds(boolean,)
    	java.util.regex.Matcher usePattern(java.util.regex.Pattern,)
    	java.util.regex.Matcher useTransparentBounds(boolean,)
    	void wait()
    	void wait(long,int,)
    	void wait(long,)
    	boolean equals(java.lang.Object,)
    	int hashCode()
    	java.lang.Class getClass()
    	void notify()
    	void notifyAll()
    
    java.util.regex.Matcher[pattern=[a-z] region=0,1 lastmatch=]