publicstaticvoidmain(String[]args) Above code line begins defining themainmethod. This is the line at which the program will start executing. All Java applications begin execution by callingmain. Thepublickeyword is an access specifier, which allows the programmer to control the visibility of class...
idea、jdk、eclispe中空main方法的线程数量不一样,why? 測试代码: public class Test { public static void main(String[] args) { System.out.println(Thread.activeCount()); } } idea执行,输出为“2” eclispe执行,输出为“1” jdk编译执行,输出为“1”...
publicclassSwitchTest{publicstaticvoidmain(String[] args){//当default在中间时,且看输出是什么?inta =1;switch(a) {case2: System.out.println("print 2");case1: System.out.println("print 1");default: System.out.println("first default print");case3: System.out.println("print 3"); }//当...
public static void main(String[] args) { System.out.println("compiler demo"); } public static int add(int a,int b){ return a+b; } } 使用javac来编译一下: cd E:\workspace\compilerdemo\src\main\java\com\github\xjs //编译 javac CompilerDemo.java //打印字节码 javap -verbose Compiler...
public static void main(String[] args){ int k,m=1;k=-m++;System.out.println(k);System.out.println(m);} } 结果：--- -1 2 说明++ 在后面是后置运算，m的结果减1后，赋值给k，k做输出，结束后，m值自加。所以m值为2 --- 注释：实际开发中不会这么用！
idea、jdk、eclispe中空main方法的线程数量不一样,why? 測试代码: public class Test { public static void main(String[] args) { System.out.println(Thread.activeCount()); } } idea执行,输出为“2” eclispe执行,输出为“1” jdk编译执行,输出为“1”...
0.0 *@description测试线程中断 */publicclassInterruptedTest{publicstaticvoidmain(String[] args){...
public int getEmpNo(){ return this.empno; } public String getEname(){ return this.ename; } } public class TestEmployeeSort { public static void main(String[] args) { List coll = Util.getEmployees(); Collections.sort(coll); // sort method ...
public : is for access modifer static : ? void :no return type in main main: method name String []p: command line argument, please tell me why we need static in main method. [ April 22, 2008: Message edited by: venu jayaram ] Ernest Friedman-Hill author and iconoclast Posts: 24207...
public static void main(String[] args) { PersonMod p = new PersonMod("Robin Smith", "robin_smith@example.com", "555-1234"); System.out.println(p); p = p.withPhoneNumber("555-9876"); System.out.println(p); } } $ java PersonModDemo.java ...