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<center><h1>20.7 The Class <code>java.lang.Integer</code></h1></center>
<pre><a name="14361"></a>public final class <code><b>Integer</b></code> extends Number {
<a name="2355"></a> public static final int <code><b>MIN_VALUE</b></code> = 0x80000000;
<a name="2356"></a> public static final int <code><b>MAX_VALUE</b></code> = 0x7fffffff;
<a name="2357"></a> public <code><b>Integer</b></code>(int value);
<a name="2358"></a> public <code><b>Integer</b></code>(String s)<br>
throws NumberFormatException;
<a name="2359"></a> public String <code><b>toString</b></code>();
<a name="2360"></a> public boolean <code><b>equals</b></code>(Object obj);
<a name="2361"></a> public int <code><b>hashCode</b></code>();
<a name="2362"></a> public int <code><b>intValue</b></code>();
<a name="2363"></a> public long <code><b>longValue</b></code>();
<a name="2364"></a> public float <code><b>floatValue</b></code>();
<a name="2365"></a> public double <code><b>doubleValue</b></code>();
<a name="2366"></a> public static String <code><b>toString</b></code>(int i);
<a name="2367"></a> public static String <code><b>toString</b></code>(int i, int radix);
<a name="7371"></a> public static String <code><b>toHexString</b></code>(long i);
<a name="7372"></a> public static String <code><b>toOctalString</b></code>(long i);
<a name="7373"></a> public static String <code><b>toBinaryString</b></code>(long i);
<a name="2431"></a> public static int <code><b>parseInt</b></code>(String s)<br>
throws NumberFormatException;
<a name="2368"></a> public static int <code><b>parseInt</b></code>(String s, int radix)<br>
throws NumberFormatException;
<a name="2371"></a> public static Integer <code><b>valueOf</b></code>(String s)<br>
throws NumberFormatException;
<a name="2437"></a> public static Integer <code><b>valueOf</b></code>(String s, int radix)<br>
throws NumberFormatException;
<a name="2372"></a> public static Integer <code><b>getInteger</b></code>(String nm);
<a name="2373"></a> public static Integer <code><b>getInteger</b></code>(String nm, int val);
<a name="2389"></a> public static Integer <code><b>getInteger</b></code>(String nm, Integer val);
<a name="2394"></a>}
</pre><a name="2390"></a>
<p><font size=+1><strong>20.7.1 </strong> <code>public static final int <code><b>MIN_VALUE</b></code> = 0x80000000;</code></font>
<p>
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The constant value of this field is <code>-2147483648</code>, the lowest value of type <code>int</code>.
<p><a name="2391"></a>
<p><font size=+1><strong>20.7.2 </strong> <code>public static final int <code><b>MAX_VALUE</b></code> = 0x7fffffff;</code></font>
<p>
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The constant value of this field is <code>2147483647</code>, the highest value of type <code>int</code>.
<p><a name="1327"></a>
<p><font size=+1><strong>20.7.3 </strong> <code>public <code><b>Integer</b></code>(int value)</code></font>
<p>
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This constructor initializes a newly created <code>Integer</code> object so that it represents
the primitive value that is the argument.
<p><a name="1328"></a>
<p><font size=+1><strong>20.7.4 </strong> <code>public <code><b>Integer</b></code>(String s) throws NumberFormatException</code></font>
<p>
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This constructor initializes a newly created <code>Integer</code> object so that it represents
the integer represented by the string in decimal form. The string is converted to an
<code>int</code> in exactly the manner used by the <code>parseInt</code> method <a href="javalang.doc6.html#4930">(§20.7.18)</a> for radix 10.
<p><a name="3709"></a>
<p><font size=+1><strong>20.7.5 </strong> <code>public String <code><b>toString</b></code>()</code></font>
<p>
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The integer value represented by this <code>Integer</code> object is converted to signed decimal
representation and returned as a string, exactly as if the integer value were
given as an argument to the <code>toString</code> method that takes one argument <a href="javalang.doc6.html#1459">(§20.7.12)</a>.
<p><a name="3950"></a>
Overrides the <code>toString</code> method of <code>Object</code> <a href="javalang.doc1.html#1152">(§20.1.2)</a>.<p>
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<p><font size=+1><strong>20.7.6 </strong> <code>public boolean <code><b>equals</b></code>(Object obj)</code></font>
<p>
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The result is <code>true</code> if and only if the argument is not <code>null</code> and is an <code>Integer</code>
object that represents the same <code>int</code> value as this <code>Integer</code> object.
<p><a name="4002"></a>
Overrides the <code>equals</code> method of <code>Object</code> <a href="javalang.doc1.html#14865">(§20.1.3)</a>.<p>
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<p><font size=+1><strong>20.7.7 </strong> <code>public int <code><b>hashCode</b></code>()</code></font>
<p>
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The result is the primitive <code>int</code> value represented by this <code>Integer</code> object.
<p><a name="4211"></a>
Overrides the <code>hashCode</code> method of <code>Object</code> <a href="javalang.doc1.html#13784">(§20.1.4)</a>.<p>
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<p><font size=+1><strong>20.7.8 </strong> <code>public int <code><b>intValue</b></code>()</code></font>
<p>
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The <code>int</code> value represented by this <code>Integer</code> object is returned.
<p><a name="4234"></a>
Overrides the <code>intValue</code> method of <code>Number</code> <a href="javalang.doc5.html#3376">(§20.6.1)</a>.<p>
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<p><font size=+1><strong>20.7.9 </strong> <code>public long <code><b>longValue</b></code>()</code></font>
<p>
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The <code>int</code> value represented by this <code>Integer</code> object is converted <a href="5.doc.html#25222">(§5.1.2)</a> to type
<code>long</code> and the result of the conversion is returned.
<p><a name="4426"></a>
Overrides the <code>longValue</code> method of <code>Number</code> <a href="javalang.doc5.html#3434">(§20.6.2)</a>.<p>
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<p><font size=+1><strong>20.7.10 </strong> <code>public float <code><b>floatValue</b></code>()</code></font>
<p>
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The <code>int</code> value represented by this <code>Integer</code> object is converted <a href="5.doc.html#25222">(§5.1.2)</a> to type
<code>float</code> and the result of the conversion is returned.
<p><a name="4417"></a>
Overrides the <code>floatValue</code> method of <code>Number</code> <a href="javalang.doc5.html#3384">(§20.6.3)</a>.<p>
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<p><font size=+1><strong>20.7.11 </strong> <code>public double <code><b>doubleValue</b></code>()</code></font>
<p>
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The <code>int</code> value represented by this <code>Integer</code> object is converted <a href="5.doc.html#25222">(§5.1.2)</a> to type
<code>double</code> and the result of the conversion is returned.
<p><a name="4408"></a>
Overrides the <code>doubleValue</code> method of <code>Number</code> <a href="javalang.doc5.html#3412">(§20.6.4)</a>.<p>
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<p><font size=+1><strong>20.7.12 </strong> <code>public static String <code><b>toString</b></code>(int i)</code></font>
<p>
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The argument is converted to signed decimal representation and returned as a
string, exactly as if the argument and the radix <code>10</code> were given as arguments to the
<code>toString</code> method that takes two arguments <a href="javalang.doc6.html#1460">(§20.7.13)</a>.
<p><a name="1460"></a>
<p><font size=+1><strong>20.7.13 </strong> <code>public static String <code><b>toString</b></code>(int i, int radix)</code></font>
<p>
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The first argument is converted to a signed representation in the radix specified by
the second argument; this representation is returned as a string.
<p><a name="24639"></a>
If the <code>radix</code> is smaller than <code>Character.MIN_RADIX</code> <a href="javalang.doc4.html#1300">(§20.5.3)</a> or larger than <code>Character.MAX_RADIX</code> <a href="javalang.doc4.html#1311">(§20.5.4)</a>, then the value <code>10</code> is used instead.<p>
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If the first argument is negative, the first character of the result will be the character <code>'-'</code> (<code>'\u002d'</code>). If the first argument is not negative, no sign character appears in the result.<p>
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The remaining characters of the result represent the magnitude of the first argument. If the magnitude is zero, it is represented by a single zero character <code>'0'</code> (<code>'\u0030'</code>); otherwise, the first character of the representation of the magnitude will not be the zero character.The following ASCII characters are used as digits:<p>
<pre><a name="3892"></a><code>0123456789abcdefghijklmnopqrstuvwxyz
</code></pre><a name="3893"></a>
These are <code>'\u0030'</code> through <code>'\u0039'</code> and <code>'\u0061'</code> through <code>'\u007a'</code>. If the
<code>radix</code> is <i>N</i>, then the first <i>N</i> of these characters are used as radix-<i>N</i> digits in the
order shown. Thus, the digits for hexadecimal (radix 16) are <code>0123456789abcdef</code>.
If uppercase letters are desired, the <code>toUpperCase</code> method <a href="javalang.doc11.html#14011">(§20.12.36)</a> of class
<code>String</code> may be called on the result:
<p><pre><a name="3897"></a>Integer.toString(n, 16).toUpperCase()
</pre><a name="7332"></a>
<p><font size=+1><strong>20.7.14 </strong> <code>public static String <code><b>toHexString</b></code>(int i)</code></font>
<p>
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The argument is converted to an unsigned representation in hexadecimal radix
(base 16); this representation is returned as a string.
<p><a name="7334"></a>
The result represents the unsigned magnitude of the argument. This equals the argument plus <img src="javalang.doc.anc45.gif">if the argument is negative; otherwise, it equals the argument.<p>
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