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Field names of structure, or public fields of COM or Java object


names = fieldnames(s)
names = fieldnames(obj,'-full')


names = fieldnames(s) returns a cell array of character vectors containing the names of the fields in structure s.

names = fieldnames(obj,'-full') returns a cell array of character vectors containing the name, type, attributes, and inheritance of the properties of obj. Only supported for COM or Java® objects.


collapse all

Create a structure array and view its fields.

s(1,1).name = 'alice';
s(1,1).ID = 0;
s(2,1).name = 'gertrude';
s(2,1).ID = 1;

names = fieldnames(s)
names =

  2×1 cell array


Create a Java® object and view its public properties.

obj = java.lang.Integer(0);
names = fieldnames(obj,'-full')
names =

  4×1 cell array

    'static final int MIN_VALUE'
    'static final int MAX_VALUE'
    'static final java.lang.Class TYPE'
    'static final int SIZE'

Introduced before R2006a

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