The Java Developers Almanac 1.4

e72. Determining If a String Contains a Substring

    String string = "Madam, I am Adam";
    
    // Starts with
    boolean  b = string.startsWith("Mad");  // true
    
    // Ends with
    b = string.endsWith("dam");             // true
    
    // Anywhere
    b = string.indexOf("I am") > 0;         // true
    
    // To ignore case, regular expressions must be used
    
    // Starts with
    b = string.matches("(?i)mad.*");
    
    // Ends with
    b = string.matches("(?i).*adam");
    
    // Anywhere
    b = string.matches("(?i).*i am.*");

Related Examples

e70. Constructing a String
e71. Comparing Strings
e73. Getting a Substring from a String
e74. Searching a String for a Character or a Substring
e75. Replacing Characters in a String
e76. Replacing Substrings in a String
e77. Converting a String to Upper or Lower Case
e78. Converting a Primitive Type Value to a String
e79. Converting Between Unicode and UTF-8
e80. Determining a Character's Unicode Block
e81. Determining If a String Is a Legal Java Identifier

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© 2002 Addison-Wesley.