\u8fd9\u4e2a\u95ee\u9898\u4e3b\u8981\u7528\u6765\u68c0\u67e5\u4f60\u5bf9\u5f53\u524d Java\u5f00\u53d1\u7684\u4e86\u89e3\u3002Java 7\u6269\u5c55\u4e86switch case\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u80fd\u529b\uff0c\u65e9\u671f\u7684Java\u7248\u672c\u4e0d\u652f\u6301\u8fd9\u4e00\u70b9\u3002\u5982\u679c\u60a8\u6b63\u5728\u5b9e\u73b0\u5b57\u7b26\u4e32\u7684\u6761\u4ef6\u94fe,\u60a8\u53ef\u4ee5\u4f7f\u7528if-else\u6761\u4ef6,\u5982\u679c\u60a8\u4f7f\u7528 Java7\u6216\u66f4\u9ad8\u7248\u672c,\u5219\u53ef\u4ee5\u4f7f\u7528switch case\u3002
\n\u5728 Java 7\u4e4b\u524d,\u5b9e\u73b0\u57fa\u4e8e\u5b57\u7b26\u4e32\u7684\u6761\u4ef6\u6d41\u7684\u552f\u4e00\u65b9\u6cd5\u662f\u4f7f\u7528if-else\u6761\u4ef6\u3002\u4f46\u662f Java 7\u4e5f\u6539\u8fdb\u4e86 switch case\u6765\u652f\u6301 String.
\npublic class SwitchStringExample {
\npublic static void main(String[] args){
\nprintColorUsingSwitch("red");
\nprintColorUsingIf("red");
\n\/\/ switch case string is case sensitive
\nprintColorUsingSwitch("RED");
\nprintColorUsingSwitch(null);
\n}
\nprivate static void printColorUsingIf(String color){
\nif (color.equals("blue")){
\nSystem.out.println("BLUE");
\n}else if (color.equals("red")){
\nSystem.out. println("RED");
\n}else {
\nSystem.out.println("INVALID COLOR CODE");
\n}
\n}
\nprivate static void printColorUsingSwitch(String color){
\nswitch (color){
\ncase "blue":
\nSystem.out.println("BLUE");
\nbreak;
\ncase "red":
\nSystem.out.println("RED");
\nbreak;
\ndefault:
\nSystem.out.println("INVALID COLOR CODE");
\n}
\n}
\n}
\n\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b:
\nRED
\nRED
\nINVALID COLOR CODE
\nException in thread "main" java.lang.NullPointerException
\nat
\ncom.yveshe.SwitchStringExample. printColorUsingSwitch(SwitchStringExample.java:34)
\nat com.yveshe.SwitchStringExample.main(SwitchStringExample.java:20)
\nSwitch\u4e2d\u4f7f\u7528String\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9:
\n1\u3001switch\u80fd\u591f\u53d6\u4ee3if-else-if\u6761\u4ef6\u94fe\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u6613\u8bfb
\n2\u3001switch\u6bd4\u8f83\u7684\u65f6\u5019\u533a\u5206\u5927\u5c0f\u5199,\u8f93\u51fa\u7684\u4f8b\u5b50\u4e5f\u8bf4\u660e\u4e86\u8fd9\u4e00\u70b9
\n3\u3001Java\u4e2dswitch\u662f\u901a\u8fc7String.equals()\u65b9\u6cd5\u6765\u6bd4\u8f83\u4f20\u9012\u503c\u548ccase\u503c\uff0c\u6240\u4ee5\u8bf7\u786e\u4fdd\u6dfb\u52a0NULL\u68c0\u67e5\u4ee5\u907f\u514dNullPointerException
\n4\u3001java\u7f16\u8bd1\u5668\u4e3aSwitch\u8bed\u53e5\u4e2d\u7684\u5b57\u7b26\u4e32\u751f\u6210\u6bd4\u94fe\u5f0fif-else-if\u6761\u4ef6\u8bed\u53e5\u66f4\u6709\u6548\u7684\u5b57\u8282\u7801
\n5\u3001Java switch case String\u53ea\u80fd\u5728Java7\u6216\u66f4\u9ad8\u7684\u7248\u672c\u4e2d\u4f7f\u7528\uff0c\u5426\u5219\u5b83\u4f1a\u629b\u51fa\u5f02\u5e38<\/p>\n","protected":false},"excerpt":{"rendered":"
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