Get the list of all the declared methods in Java

The list of all the declared methods can be obtained using the java.lang.Class.getDeclaredMethods() method. This method returns an array that contains all the Method objects with public, private, protected and default access. However, the inherited methods are not included.

Also, the getDeclaredMethods() method returns a zero-length array if the class or interface has no methods or if a primitive type, array class or void is represented in the Class object.

A program that demonstrates this is given as follows −

Example

 Live Demo

import java.lang.reflect.Method;
public class Main {
   public static void main(String[] argv) throws Exception {
      Class c = java.lang.String.class;
      Method[] methods = c.getDeclaredMethods();
      for(int i = 0; i < methods.length; i++) {
         System.out.println("The method is: " + methods[i].toString());
      }
   }
}

Output

The method is: public boolean java.lang.String.equals(java.lang.Object)
The method is: public java.lang.String java.lang.String.toString()
The method is: public int java.lang.String.hashCode()
The method is: public int java.lang.String.compareTo(java.lang.Object)
The method is: public int java.lang.String.compareTo(java.lang.String)
The method is: public int java.lang.String.indexOf(java.lang.String,int)
The method is: static int java.lang.String.indexOf(char[],int,int,java.lang.String,int)
The method is: static int java.lang.String.indexOf(char[],int,int,char[],int,int,int)
The method is: public int java.lang.String.indexOf(int)
The method is: public int java.lang.String.indexOf(java.lang.String)
The method is: public int java.lang.String.indexOf(int,int)
The method is: public static java.lang.String java.lang.String.valueOf(char)
The method is: public static java.lang.String java.lang.String.valueOf(java.lang.Object)
The method is: public static java.lang.String java.lang.String.valueOf(boolean)
The method is: public static java.lang.String java.lang.String.valueOf(char[],int,int)
The method is: public static java.lang.String java.lang.String.valueOf(char[])
The method is: public static java.lang.String java.lang.String.valueOf(double)
The method is: public static java.lang.String java.lang.String.valueOf(float)
The method is: public static java.lang.String java.lang.String.valueOf(long)
The method is: public static java.lang.String java.lang.String.valueOf(int)
The method is: private static void java.lang.String.checkBounds(byte[],int,int)
The method is: public int java.lang.String.length()
The method is: public boolean java.lang.String.isEmpty()
The method is: public char java.lang.String.charAt(int)
The method is: public int java.lang.String.codePointAt(int)
The method is: public int java.lang.String.codePointBefore(int)
The method is: public int java.lang.String.codePointCount(int,int)
The method is: public int java.lang.String.offsetByCodePoints(int,int)
The method is: public void java.lang.String.getChars(int,int,char[],int)
The method is: void java.lang.String.getChars(char[],int)
The method is: public byte[] java.lang.String.getBytes()
The method is: public byte[] java.lang.String.getBytes(java.lang.String) throws java.io.UnsupportedEncodingException
The method is: public void java.lang.String.getBytes(int,int,byte[],int)
The method is: public byte[] java.lang.String.getBytes(java.nio.charset.Charset)
The method is: public boolean java.lang.String.contentEquals(java.lang.StringBuffer)
The method is: public boolean java.lang.String.contentEquals(java.lang.CharSequence)
The method is: private boolean java.lang.String.nonSyncContentEquals(java.lang.AbstractStringBuilder)
The method is: public boolean java.lang.String.equalsIgnoreCase(java.lang.String)
The method is: public int java.lang.String.compareToIgnoreCase(java.lang.String)
The method is: public boolean java.lang.String.regionMatches(int,java.lang.String,int,int)
The method is: public boolean java.lang.String.regionMatches(boolean,int,java.lang.String,int,int)
The method is: public boolean java.lang.String.startsWith(java.lang.String)
The method is: public boolean java.lang.String.startsWith(java.lang.String,int)
The method is: public boolean java.lang.String.endsWith(java.lang.String)
The method is: private int java.lang.String.indexOfSupplementary(int,int)
The method is: public int java.lang.String.lastIndexOf(int,int)
The method is: static int java.lang.String.lastIndexOf(char[],int,int,char[],int,int,int)
The method is: static int java.lang.String.lastIndexOf(char[],int,int,java.lang.String,int)
The method is: public int java.lang.String.lastIndexOf(java.lang.String,int)
The method is: public int java.lang.String.lastIndexOf(int)
The method is: public int java.lang.String.lastIndexOf(java.lang.String)
The method is: private int java.lang.String.lastIndexOfSupplementary(int,int)
The method is: public java.lang.String java.lang.String.substring(int)
The method is: public java.lang.String java.lang.String.substring(int,int)
The method is: public java.lang.CharSequence java.lang.String.subSequence(int,int)
The method is: public java.lang.String java.lang.String.concat(java.lang.String)
The method is: public java.lang.String java.lang.String.replace(char,char)
The method is: public java.lang.String java.lang.String.replace(java.lang.CharSequence,java.lang.CharSequence)
The method is: public boolean java.lang.String.matches(java.lang.String)
The method is: public boolean java.lang.String.contains(java.lang.CharSequence)
The method is: public java.lang.String java.lang.String.replaceFirst(java.lang.String,java.lang.String)
The method is: public java.lang.String java.lang.String.replaceAll(java.lang.String,java.lang.String)
The method is: public java.lang.String[] java.lang.String.split(java.lang.String,int)
The method is: public java.lang.String[] java.lang.String.split(java.lang.String)
The method is: public static java.lang.String java.lang.String.join(java.lang.CharSequence,java.lang.CharSequence[])
The method is: public static java.lang.String java.lang.String.join(java.lang.CharSequence,java.lang.Iterable)
The method is: public java.lang.String java.lang.String.toLowerCase(java.util.Locale)
The method is: public java.lang.String java.lang.String.toLowerCase()
The method is: public java.lang.String java.lang.String.toUpperCase()
The method is: public java.lang.String java.lang.String.toUpperCase(java.util.Locale)
The method is: public java.lang.String java.lang.String.trim()
The method is: public char[] java.lang.String.toCharArray()
The method is: public static java.lang.String java.lang.String.format(java.util.Locale,java.lang.String,java.lang.Object[])
The method is: public static java.lang.String java.lang.String.format(java.lang.String,java.lang.Object[])
The method is: public static java.lang.String java.lang.String.copyValueOf(char[],int,int)
The method is: public static java.lang.String java.lang.String.copyValueOf(char[])
The method is: public native java.lang.String java.lang.String.intern()

Ankith Reddy

Published on 09-Jan-2019 06:48:03

• Related Questions & Answers
• Get the list of all declared fields in Java
• Get the list of all the public methods in Java
• Display the declared methods of java.lang.Math
• Get the list of all the public fields in Java
• Get all declared fields from a class in Java
• How to get the list of all the MongoDB databases using java?
• Get the declared method by name and parameter type in Java
• How to get the list of all the commands available in the PowerShell?
• Get all methods of any object JavaScript
• Get all the IDs of the Time Zone in Java
• How to get the list of all databases using JDBC?
• Getting the list of all the matches Java regular expressions
• Difference between the list() and listFiles() methods in Java
• Write a program to get the list of all the supported datatypes in JDBC?
• How to get the list of all drivers registered with the DriverManager using JDBC?