📄 csdn_文档中心_一步一步学java(第四课 方法、值传递、this关键字).htm
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</SPAN>int k = a + b + c;<o:p></o:p></SPAN></P>
<P class=a
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lang=EN-GB
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</SPAN>System.out.println("the result is:" +
k);<o:p></o:p></SPAN></P>
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</SPAN>}<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 1"> </SPAN>public
String getInfo(){<o:p></o:p></SPAN></P>
<P class=a
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lang=EN-GB
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</SPAN>return "this is from class Tool";<SPAN
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</SPAN><o:p></o:p></SPAN></P>
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lang=EN-GB
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</SPAN>}<o:p></o:p></SPAN></P>
<P class=a
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style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt">}<o:p></o:p></SPAN></P>
<P class=a style="MARGIN: 6pt 0cm; TEXT-INDENT: 15.65pt"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><o:p> </o:p></SPAN></P>
<P class=a
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lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt">public
class Test{<o:p></o:p></SPAN></P>
<P class=a
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lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 1"> </SPAN>public
static void main(String[] args){<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 2">
</SPAN>Tool t = new Tool();<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
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</SPAN>int j = t.add(3,4,5);<o:p></o:p></SPAN></P>
<P class=a
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lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
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</SPAN>t.add(3,4,5);<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
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</SPAN>int f = t.add(100,4.15,8);<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 2">
</SPAN>int k = t.add_display(6,7,8);<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 2">
</SPAN>t.add_display(6,7,8);<SPAN
style="mso-tab-count: 2">
</SPAN><o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
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</SPAN>System.out.println(t.getInfo());<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt"><SPAN
style="mso-tab-count: 1"> </SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>}<o:p></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm 6pt 10.5pt; TEXT-INDENT: 15.65pt; mso-char-indent-count: 0; mso-para-margin-left: 1.0gd"><SPAN
lang=EN-GB
style="FONT-SIZE: 10.5pt; mso-fareast-font-family: 楷体_GB2312; mso-bidi-font-size: 12.0pt; mso-font-kerning: 22.0pt">}</SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><SPAN
lang=EN-GB><o:p><FONT size=3> </FONT></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><SPAN
lang=EN-GB><o:p><FONT size=3> </FONT></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><SPAN
lang=EN-GB><o:p><FONT size=3> </FONT></o:p></SPAN></P>
<P class=a
style="MARGIN: 6pt 0cm; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><FONT
size=3><SPAN lang=EN-US style="mso-ansi-language: EN-US"><SPAN
style="mso-spacerun: yes"> </SPAN>Java</SPAN><SPAN
style="FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US">值传递举例</SPAN></FONT></P>
<P class=a2
style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><FONT
size=3><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">案例文件</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-hansi-font-family: 'Times New Roman'">：</SPAN><SPAN
lang=EN-GB>Example.java</SPAN></FONT></P>
<P class=a2
style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><FONT
size=3><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">目</SPAN><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">标</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-hansi-font-family: 'Times New Roman'">：掌握</SPAN><SPAN
lang=EN-US style="mso-ansi-language: EN-US">Java</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-hansi-font-family: 'Times New Roman'">值传递机制，体会</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">基本类型和引用类型数据值传递的不同</SPAN></FONT></P>
<P class=a2
style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 0cm; mso-char-indent-count: 0"><FONT
size=3><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">代</SPAN><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">码：</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB>/ *<SPAN
style="mso-tab-count: 1">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">范例名称：</SPAN><SPAN
lang=EN-GB>Java</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">值传递举例</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"> </SPAN>* <SPAN
style="mso-tab-count: 1">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">源文件名称：</SPAN><SPAN
lang=EN-GB>Example.java</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"> </SPAN>*<SPAN
style="mso-tab-count: 1">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">描</SPAN><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">述：在应用程序中使用和测试值传递机制。</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"> </SPAN>*<SPAN
style="mso-tab-count: 1">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">要</SPAN><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes">
</SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">点：</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"> </SPAN>* <SPAN
style="mso-tab-count: 2">
</SPAN>1. </SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">值传递原则及适用场合</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><FONT size=3><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"> </SPAN>*<SPAN
style="mso-tab-count: 2">
</SPAN>2. </SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">基本类型和引用类型数据值传递的联系和区别</SPAN></FONT></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-spacerun: yes"> </SPAN>*/</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><SPAN style="mso-spacerun: yes"><FONT
size=3></FONT></SPAN></SPAN> </P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3>class BirthDate {</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1"> </SPAN>private int
day;</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1"> </SPAN>private int
month;</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1"> </SPAN>private int
year;</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1"> </SPAN>public
BirthDate(int d,int m,int y){</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 2">
</SPAN>day = d;<SPAN style="mso-spacerun: yes"> </SPAN>month =
m; year = y;</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1">
</SPAN>}</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1"> </SPAN>public void
setDay(int d){</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 2">
</SPAN>day = d; </FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
lang=EN-GB><FONT size=3><SPAN
style="mso-tab-count: 1">
</SPAN>}</FONT></SPAN></P>
<P class=a2 style="MARGIN: 0cm 0cm 0pt 10.5pt"><SPAN
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