关于javaatd的信息

博主:adminadmin 2023-01-12 14:30:09 269

今天给各位分享javaatd的知识,其中也会对进行解释,如果能碰巧解决你现在面临的问题,别忘了关注本站,现在开始吧!

本文目录一览:

java语义分析

public class VariableTypeResolver {

private final String symbol;

private final ASTNode minScope;

private boolean methodLevel = true;

private boolean typeLevel = true;

/**

* The found result

*/

private SimpleName declSN;

private final ASTVisitor visitor = new ASTVisitor() {

@Override

public boolean visit(SimpleName sn) {

if (found()) {

return false;

}

if (sn.getIdentifier().equals(symbol) sn.getParent() instanceof VariableDeclaration) {

declSN = sn;

return false;

}

return true;

}

};

/**

* Starts resolving with the requested symbol

* @param varSymbolNode the variable symbol node to resolve (node must be in the AST)

*/

public VariableTypeResolver(SimpleName varSymbolNode) {

this.symbol = varSymbolNode.getIdentifier();

this.minScope = varSymbolNode;

}

public VariableTypeResolver(String varSymbol, ASTNode minScope) {

this.symbol = varSymbol;

this.minScope = minScope;

}

public VariableTypeResolver disableMethodLevel() {

methodLevel = false;

return this;

}

public VariableTypeResolver disableTypeLevel() {

typeLevel = false;

return this;

}

/**

* Node's parent is instance of {@link VariableDeclarationFragment} or {@link SingleVariableDeclaration}

* @return the SimpleName node of declaration

*/

public SimpleName resolveDeclSimpleName() {

if (!found()) {

resolve();

}

return declSN;

}

private void resolve() {

if(found()) {return;}

if (methodLevel) {

apply(FindUpper.methodScope(minScope));

}

if(found()) {return;}

if (typeLevel) {

AbstractTypeDeclaration typeScope = FindUpper.abstractTypeScope(minScope);

applyInFields(typeScope);

if(found()) {return;}

for (TypeDeclaration superClass : superClasses(typeScope)) {

if(found()) {return;}

applyInFields(superClass);

}

}

}

private boolean found() {

return declSN != null;

}

private void apply(ASTNode scope) {

if (scope == null) {

throw new NullPointerException();

}

scope.accept(visitor);

}

private void applyInFields(AbstractTypeDeclaration typeScope) {

for (Object bd : typeScope.bodyDeclarations()) {

if (bd instanceof FieldDeclaration) {

apply((ASTNode) bd);

}

}

}

private ListTypeDeclaration superClasses(AbstractTypeDeclaration atd) {

if (atd instanceof TypeDeclaration) {

return AstUtils.superClasses((TypeDeclaration) atd);

}

else {

return Collections.EMPTY_LIST;

}

}

}

也是网上找的

javac 引入包问题

如果你的类都在一个文件夹下,那么这么写

javac -classpath c:\xxx\B.jar, c:\xxx\C.jar *.java

如果要处理大量的依赖关系,最好用eclipse,要么用ant自己写。

Cannot complete the install because one or more required items could

你将ADT解压出来看看,看你上面的那几个包,在解压出来后的ADT中是否能找到,想你出现这种情况,一般来说你是在解压出来的ADT中是找不到的,我当初也出现过这样的问题,发现ADT中没有上面指出的那几个包,后来换了个新版本的ADT,问题就解决了,或者你直接在线跟新ADT也行

用java做一个java登录监控程序,监控当前有多少个session有效,急~~~~

自定义一个SESSION的监听类就行

public class SessionListener implements HttpSessionAttributeListener {

private static HashMap _U = new HashMap();

public static HashMap get_U() {

return _U;

}

/**

* 返回在线用户数量

* @return

*/

public static int size(){

return get_U().size();

}

public static void set_U(HashMap _u) {

_U = _u;

}

public void attributeAdded(HttpSessionBindingEvent event) {

if(event.getName().equals("Account")){

_U.put(event.getValue(),new Timestamp(System.currentTimeMillis()));

}

}

public void attributeRemoved(HttpSessionBindingEvent event) {

if(event.getName().equals("Account")){

_U.remove(event.getValue());

}

}

public static float getOnlineHour(Timestamp tsp){

return AtdUtil.marginMin(tsp,new Timestamp(System.currentTimeMillis()));

}

public void attributeReplaced(HttpSessionBindingEvent event) {

}

}

java script 遇到的动态添加 ie浏览器不支持 别的都可以 问题出在哪? ie具体不支持我写的哪些关键字?

IE的版本不同,会有不同的问题的。。。。。。添加alert 来慢慢调试

这样的添加方式较好

var tbl = document.getElementById("two");

var row = tbl.insertRow();

var cell=row.insertCell();

cell.innerHTML = "hello world";

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