Java Reflection Field Set setField(Object obj, String fieldName, Object value)

Description

set Field

License

Open Source License

Declaration

public static void setField(Object obj, String fieldName, Object value) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.lang.reflect.*;

public class Main {
    public static void setField(Object obj, String fieldName, Object value) {
        try {//w w w  .ja v a  2  s  . c om
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.set(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, double value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setDouble(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, int value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setInt(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, long value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setLong(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, short value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setShort(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, byte value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setByte(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, char value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setChar(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static void setField(Object obj, String fieldName, boolean value) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            f.setBoolean(obj, value);
        } catch (Exception e) {
        }
        ;
    }

    public static Object getField(Object obj, String fieldName) {
        try {
            Class c = obj.getClass();
            Field f = c.getField(fieldName);
            return f.get(obj);
        } catch (Exception e) {
        }
        ;
        return null;
    }

    public static final Object GetField(Object obj, String field) {
        Field fld = null;
        try {
            Class c = obj.getClass();
            fld = c.getField(field);
        } catch (Exception e) {
            System.err.println(e);
            e.printStackTrace();
        }
        if (fld != null) {
            try {
                return fld.get(obj);
            } catch (Exception e) {
                System.err.println(e);
                e.printStackTrace();
            }
        } else {
            System.err.println("ERROR: NO FIELD " + field + " FOUND IN CLASS " + obj.getClass().getName());
        }
        return null;
    }
}

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6. setField(Object obj, String fieldName, Object value, Class valueClass)
7. setField(Object obj, String name, Object value)
8. setField(Object obj, String name, Object value)
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